Add readme

README.md

+# Links
+
+- [RevealJS](https://github.com/hakimel/reveal.js)
+- [Original mdshow repository from jceb](https://github.com/jceb/mdshow)
+- [MarkDeck alternative](https://github.com/arnehilmann/markdeck)
+- [Reveal-MD alternative](https://github.com/webpro/reveal-md)