upgrade to reveal.js-3.3.0
diff --git a/inst/reveal.js-3.3.0/.gitignore b/inst/reveal.js-3.3.0/.gitignore
new file mode 100644
index 0000000..e7b4f21
--- /dev/null
+++ b/inst/reveal.js-3.3.0/.gitignore
@@ -0,0 +1,13 @@
+.idea/
+*.iml
+*.iws
+*.eml
+out/
+.DS_Store
+.svn
+log/*.log
+tmp/**
+node_modules/
+.sass-cache
+css/reveal.min.css
+js/reveal.min.js
\ No newline at end of file