Update to reveal.js 4.1.2 (#136)

- New tools/ script to manually keep step for updates
- Plugins are all updated
- Template update following latest Pandoc version
- updated README for documentation
- Help page updated 
- See other change in NEWS file
diff --git a/inst/reveal.js-4.1.2/examples/barebones.html b/inst/reveal.js-4.1.2/examples/barebones.html
new file mode 100644
index 0000000..50adcb8
--- /dev/null
+++ b/inst/reveal.js-4.1.2/examples/barebones.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8">
+		<title>reveal.js - Barebones</title>
+		<link rel="stylesheet" href="../dist/reveal.css">
+	</head>
+	<body>
+
+		<div class="reveal">
+			<div class="slides">
+
+				<section>
+					<h2>Barebones Presentation</h2>
+					<p>This example contains the bare minimum includes and markup required to run a reveal.js presentation.</p>
+				</section>
+
+				<section>
+					<h2>No Theme</h2>
+					<p>There's no theme included, so it will fall back on browser defaults.</p>
+				</section>
+
+			</div>
+		</div>
+
+		<script src="../dist/reveal.js"></script>
+		<script>
+			Reveal.initialize();
+		</script>
+
+	</body>
+</html>