diff --git a/inst/reveal.js-3.3.0/css/reveal.css b/inst/reveal.js-3.3.0/css/reveal.css
index 2f115e5..778076e 100644
--- a/inst/reveal.js-3.3.0/css/reveal.css
+++ b/inst/reveal.js-3.3.0/css/reveal.css
@@ -3,7 +3,7 @@
  * http://lab.hakim.se/reveal-js
  * MIT licensed
  *
- * Copyright (C) 2015 Hakim El Hattab, http://hakim.se
+ * Copyright (C) 2016 Hakim El Hattab, http://hakim.se
  */
 /*********************************************
  * RESET STYLES
@@ -20,7 +20,7 @@
 .reveal article, .reveal aside, .reveal canvas, .reveal details, .reveal embed,
 .reveal figure, .reveal figcaption, .reveal footer, .reveal header, .reveal hgroup,
 .reveal menu, .reveal nav, .reveal output, .reveal ruby, .reveal section, .reveal summary,
-.reveal time, .reveal mark, .reveal audio, video {
+.reveal time, .reveal mark, .reveal audio, .reveal video {
   margin: 0;
   padding: 0;
   border: 0;
@@ -47,20 +47,14 @@
   background-color: #fff;
   color: #000; }
 
-html:-webkit-full-screen-ancestor {
-  background-color: inherit; }
-
-html:-moz-full-screen-ancestor {
-  background-color: inherit; }
-
 /*********************************************
  * VIEW FRAGMENTS
  *********************************************/
 .reveal .slides section .fragment {
   opacity: 0;
   visibility: hidden;
-  -webkit-transition: all 0.2s ease;
-          transition: all 0.2s ease; }
+  -webkit-transition: all .2s ease;
+          transition: all .2s ease; }
   .reveal .slides section .fragment.visible {
     opacity: 1;
     visibility: visible; }
@@ -70,7 +64,6 @@
   visibility: visible; }
   .reveal .slides section .fragment.grow.visible {
     -webkit-transform: scale(1.3);
-        -ms-transform: scale(1.3);
             transform: scale(1.3); }
 
 .reveal .slides section .fragment.shrink {
@@ -78,16 +71,13 @@
   visibility: visible; }
   .reveal .slides section .fragment.shrink.visible {
     -webkit-transform: scale(0.7);
-        -ms-transform: scale(0.7);
             transform: scale(0.7); }
 
 .reveal .slides section .fragment.zoom-in {
   -webkit-transform: scale(0.1);
-      -ms-transform: scale(0.1);
           transform: scale(0.1); }
   .reveal .slides section .fragment.zoom-in.visible {
     -webkit-transform: none;
-        -ms-transform: none;
             transform: none; }
 
 .reveal .slides section .fragment.fade-out {
@@ -110,6 +100,34 @@
   .reveal .slides section .fragment.strike.visible {
     text-decoration: line-through; }
 
+.reveal .slides section .fragment.fade-up {
+  -webkit-transform: translate(0, 20%);
+          transform: translate(0, 20%); }
+  .reveal .slides section .fragment.fade-up.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-down {
+  -webkit-transform: translate(0, -20%);
+          transform: translate(0, -20%); }
+  .reveal .slides section .fragment.fade-down.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-right {
+  -webkit-transform: translate(-20%, 0);
+          transform: translate(-20%, 0); }
+  .reveal .slides section .fragment.fade-right.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
+.reveal .slides section .fragment.fade-left {
+  -webkit-transform: translate(20%, 0);
+          transform: translate(20%, 0); }
+  .reveal .slides section .fragment.fade-left.visible {
+    -webkit-transform: translate(0, 0);
+            transform: translate(0, 0); }
+
 .reveal .slides section .fragment.current-visible {
   opacity: 0;
   visibility: hidden; }
@@ -190,7 +208,6 @@
   background-color: transparent;
   border: 12px solid transparent;
   -webkit-transform: scale(0.9999);
-      -ms-transform: scale(0.9999);
           transform: scale(0.9999);
   -webkit-transition: all 0.2s ease;
           transition: all 0.2s ease;
@@ -327,7 +344,6 @@
   -webkit-transform-style: preserve-3d;
           transform-style: preserve-3d;
   -webkit-transition: -webkit-transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), -webkit-transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
-          transition: -ms-transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985);
           transition: transform-origin 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), transform 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), visibility 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985), opacity 800ms cubic-bezier(0.26, 0.86, 0.44, 0.985); }
 
 /* Global transition speed settings */
@@ -395,28 +411,24 @@
 .reveal .slides > section[data-transition~=slide-out].past,
 .reveal.slide .slides > section:not([data-transition]).past {
   -webkit-transform: translate(-150%, 0);
-      -ms-transform: translate(-150%, 0);
           transform: translate(-150%, 0); }
 
 .reveal .slides > section[data-transition=slide].future,
 .reveal .slides > section[data-transition~=slide-in].future,
 .reveal.slide .slides > section:not([data-transition]).future {
   -webkit-transform: translate(150%, 0);
-      -ms-transform: translate(150%, 0);
           transform: translate(150%, 0); }
 
 .reveal .slides > section > section[data-transition=slide].past,
 .reveal .slides > section > section[data-transition~=slide-out].past,
 .reveal.slide .slides > section > section:not([data-transition]).past {
   -webkit-transform: translate(0, -150%);
-      -ms-transform: translate(0, -150%);
           transform: translate(0, -150%); }
 
 .reveal .slides > section > section[data-transition=slide].future,
 .reveal .slides > section > section[data-transition~=slide-in].future,
 .reveal.slide .slides > section > section:not([data-transition]).future {
   -webkit-transform: translate(0, 150%);
-      -ms-transform: translate(0, 150%);
           transform: translate(0, 150%); }
 
 .reveal.linear section {
@@ -427,28 +439,24 @@
 .reveal .slides > section[data-transition~=linear-out].past,
 .reveal.linear .slides > section:not([data-transition]).past {
   -webkit-transform: translate(-150%, 0);
-      -ms-transform: translate(-150%, 0);
           transform: translate(-150%, 0); }
 
 .reveal .slides > section[data-transition=linear].future,
 .reveal .slides > section[data-transition~=linear-in].future,
 .reveal.linear .slides > section:not([data-transition]).future {
   -webkit-transform: translate(150%, 0);
-      -ms-transform: translate(150%, 0);
           transform: translate(150%, 0); }
 
 .reveal .slides > section > section[data-transition=linear].past,
 .reveal .slides > section > section[data-transition~=linear-out].past,
 .reveal.linear .slides > section > section:not([data-transition]).past {
   -webkit-transform: translate(0, -150%);
-      -ms-transform: translate(0, -150%);
           transform: translate(0, -150%); }
 
 .reveal .slides > section > section[data-transition=linear].future,
 .reveal .slides > section > section[data-transition~=linear-in].future,
 .reveal.linear .slides > section > section:not([data-transition]).future {
   -webkit-transform: translate(0, 150%);
-      -ms-transform: translate(0, 150%);
           transform: translate(0, 150%); }
 
 /*********************************************
@@ -543,7 +551,6 @@
 .reveal.zoom .slides > section:not([data-transition]).past {
   visibility: hidden;
   -webkit-transform: scale(16);
-      -ms-transform: scale(16);
           transform: scale(16); }
 
 .reveal .slides > section[data-transition=zoom].future,
@@ -551,21 +558,18 @@
 .reveal.zoom .slides > section:not([data-transition]).future {
   visibility: hidden;
   -webkit-transform: scale(0.2);
-      -ms-transform: scale(0.2);
           transform: scale(0.2); }
 
 .reveal .slides > section > section[data-transition=zoom].past,
 .reveal .slides > section > section[data-transition~=zoom-out].past,
 .reveal.zoom .slides > section > section:not([data-transition]).past {
   -webkit-transform: translate(0, -150%);
-      -ms-transform: translate(0, -150%);
           transform: translate(0, -150%); }
 
 .reveal .slides > section > section[data-transition=zoom].future,
 .reveal .slides > section > section[data-transition~=zoom-in].future,
 .reveal.zoom .slides > section > section:not([data-transition]).future {
   -webkit-transform: translate(0, 150%);
-      -ms-transform: translate(0, 150%);
           transform: translate(0, 150%); }
 
 /*********************************************
@@ -619,28 +623,24 @@
 
 .reveal.cube .slides > section.past {
   -webkit-transform-origin: 100% 0%;
-      -ms-transform-origin: 100% 0%;
           transform-origin: 100% 0%;
   -webkit-transform: translate3d(-100%, 0, 0) rotateY(-90deg);
           transform: translate3d(-100%, 0, 0) rotateY(-90deg); }
 
 .reveal.cube .slides > section.future {
   -webkit-transform-origin: 0% 0%;
-      -ms-transform-origin: 0% 0%;
           transform-origin: 0% 0%;
   -webkit-transform: translate3d(100%, 0, 0) rotateY(90deg);
           transform: translate3d(100%, 0, 0) rotateY(90deg); }
 
 .reveal.cube .slides > section > section.past {
   -webkit-transform-origin: 0% 100%;
-      -ms-transform-origin: 0% 100%;
           transform-origin: 0% 100%;
   -webkit-transform: translate3d(0, -100%, 0) rotateX(90deg);
           transform: translate3d(0, -100%, 0) rotateX(90deg); }
 
 .reveal.cube .slides > section > section.future {
   -webkit-transform-origin: 0% 0%;
-      -ms-transform-origin: 0% 0%;
           transform-origin: 0% 0%;
   -webkit-transform: translate3d(0, 100%, 0) rotateX(-90deg);
           transform: translate3d(0, 100%, 0) rotateX(-90deg); }
@@ -694,28 +694,24 @@
 
 .reveal.page .slides > section.past {
   -webkit-transform-origin: 0% 0%;
-      -ms-transform-origin: 0% 0%;
           transform-origin: 0% 0%;
   -webkit-transform: translate3d(-40%, 0, 0) rotateY(-80deg);
           transform: translate3d(-40%, 0, 0) rotateY(-80deg); }
 
 .reveal.page .slides > section.future {
   -webkit-transform-origin: 100% 0%;
-      -ms-transform-origin: 100% 0%;
           transform-origin: 100% 0%;
   -webkit-transform: translate3d(0, 0, 0);
           transform: translate3d(0, 0, 0); }
 
 .reveal.page .slides > section > section.past {
   -webkit-transform-origin: 0% 0%;
-      -ms-transform-origin: 0% 0%;
           transform-origin: 0% 0%;
   -webkit-transform: translate3d(0, -40%, 0) rotateX(80deg);
           transform: translate3d(0, -40%, 0) rotateX(80deg); }
 
 .reveal.page .slides > section > section.future {
   -webkit-transform-origin: 0% 100%;
-      -ms-transform-origin: 0% 100%;
           transform-origin: 0% 100%;
   -webkit-transform: translate3d(0, 0, 0);
           transform: translate3d(0, 0, 0); }
@@ -727,7 +723,6 @@
 .reveal.fade .slides section:not([data-transition]),
 .reveal.fade .slides > section > section:not([data-transition]) {
   -webkit-transform: none;
-      -ms-transform: none;
           transform: none;
   -webkit-transition: opacity 0.5s;
           transition: opacity 0.5s; }
@@ -743,7 +738,6 @@
 .reveal .slides section[data-transition=none],
 .reveal.none .slides section:not([data-transition]) {
   -webkit-transform: none;
-      -ms-transform: none;
           transform: none;
   -webkit-transition: none;
           transition: none; }
@@ -797,7 +791,6 @@
   left: -50%;
   margin: 70px 0;
   -webkit-transform: none;
-      -ms-transform: none;
           transform: none; }
 
 .no-transforms .reveal .slides section section {
@@ -871,25 +864,21 @@
 .reveal[data-background-transition=slide] > .backgrounds .slide-background.past,
 .reveal > .backgrounds .slide-background.past[data-background-transition=slide] {
   -webkit-transform: translate(-100%, 0);
-      -ms-transform: translate(-100%, 0);
           transform: translate(-100%, 0); }
 
 .reveal[data-background-transition=slide] > .backgrounds .slide-background.future,
 .reveal > .backgrounds .slide-background.future[data-background-transition=slide] {
   -webkit-transform: translate(100%, 0);
-      -ms-transform: translate(100%, 0);
           transform: translate(100%, 0); }
 
 .reveal[data-background-transition=slide] > .backgrounds .slide-background > .slide-background.past,
 .reveal > .backgrounds .slide-background > .slide-background.past[data-background-transition=slide] {
   -webkit-transform: translate(0, -100%);
-      -ms-transform: translate(0, -100%);
           transform: translate(0, -100%); }
 
 .reveal[data-background-transition=slide] > .backgrounds .slide-background > .slide-background.future,
 .reveal > .backgrounds .slide-background > .slide-background.future[data-background-transition=slide] {
   -webkit-transform: translate(0, 100%);
-      -ms-transform: translate(0, 100%);
           transform: translate(0, 100%); }
 
 /* Convex */
@@ -953,7 +942,6 @@
   opacity: 0;
   visibility: hidden;
   -webkit-transform: scale(16);
-      -ms-transform: scale(16);
           transform: scale(16); }
 
 .reveal[data-background-transition=zoom] > .backgrounds .slide-background.future,
@@ -961,7 +949,6 @@
   opacity: 0;
   visibility: hidden;
   -webkit-transform: scale(0.2);
-      -ms-transform: scale(0.2);
           transform: scale(0.2); }
 
 .reveal[data-background-transition=zoom] > .backgrounds .slide-background > .slide-background.past,
@@ -969,7 +956,6 @@
   opacity: 0;
   visibility: hidden;
   -webkit-transform: scale(16);
-      -ms-transform: scale(16);
           transform: scale(16); }
 
 .reveal[data-background-transition=zoom] > .backgrounds .slide-background > .slide-background.future,
@@ -977,7 +963,6 @@
   opacity: 0;
   visibility: hidden;
   -webkit-transform: scale(0.2);
-      -ms-transform: scale(0.2);
           transform: scale(0.2); }
 
 /* Global transition speed settings */
@@ -998,7 +983,8 @@
   -webkit-perspective: 700px;
           perspective: 700px; }
   .reveal.overview .slides section {
-    height: 700px;
+    height: 100%;
+    top: 0 !important;
     opacity: 1 !important;
     overflow: hidden;
     visibility: visible !important;
@@ -1156,6 +1142,10 @@
 
 .reveal .overlay .viewport {
   position: absolute;
+  display: -webkit-box;
+  display: -webkit-flex;
+  display: -ms-flexbox;
+  display: flex;
   top: 40px;
   right: 0;
   bottom: 0;
@@ -1180,7 +1170,6 @@
   opacity: 0;
   visibility: hidden;
   -webkit-transform: scale(0.2);
-      -ms-transform: scale(0.2);
           transform: scale(0.2); }
 
 .reveal .overlay.overlay-help .viewport {
@@ -1189,8 +1178,8 @@
 
 .reveal .overlay.overlay-help .viewport .viewport-inner {
   width: 600px;
-  margin: 0 auto;
-  padding: 60px;
+  margin: auto;
+  padding: 20px 20px 80px 20px;
   text-align: center;
   letter-spacing: normal; }
 
@@ -1200,12 +1189,12 @@
 .reveal .overlay.overlay-help .viewport .viewport-inner table {
   border: 1px solid #fff;
   border-collapse: collapse;
-  font-size: 14px; }
+  font-size: 16px; }
 
 .reveal .overlay.overlay-help .viewport .viewport-inner table th,
 .reveal .overlay.overlay-help .viewport .viewport-inner table td {
   width: 200px;
-  padding: 10px;
+  padding: 14px;
   border: 1px solid #fff;
   vertical-align: middle; }
 
@@ -1254,7 +1243,6 @@
   -webkit-transition: all 400ms ease;
           transition: all 400ms ease;
   -webkit-transform-origin: 50% 0%;
-      -ms-transform-origin: 50% 0%;
           transform-origin: 50% 0%;
   -webkit-transform-style: preserve-3d;
           transform-style: preserve-3d;
@@ -1276,7 +1264,6 @@
   -webkit-backface-visibility: hidden;
           backface-visibility: hidden;
   -webkit-transform-origin: 50% 0%;
-      -ms-transform-origin: 50% 0%;
           transform-origin: 50% 0%;
   -webkit-transform: translate3d(0px, 110%, 0px) rotateX(-90deg);
           transform: translate3d(0px, 110%, 0px) rotateX(-90deg); }