Update README.md

Typo

* See http://www.wikiwand.com/en/Table_of_contents
Less deep nested headings and first links turned markdown
Update README.md
Update README.md
First Attempt at automatic linking
When you can automate it ...

* http://domchristie.github.io/to-markdown/
* All links set
Javascript highlight
Fix invalid JS
More JS highlight
Link plugins on npm
Fixing a closing backtick issue
Indent
Merge pull request #7 from sebs/master

A little cleanup