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/.gitignore b/inst/reveal.js-4.1.2/.gitignore
new file mode 100644
index 0000000..7d986c3
--- /dev/null
+++ b/inst/reveal.js-4.1.2/.gitignore
@@ -0,0 +1,12 @@
+.idea/
+*.iml
+*.iws
+*.eml
+out/
+.DS_Store
+.svn
+log/*.log
+tmp/**
+node_modules/
+.sass-cache
+dist/*.map
\ No newline at end of file