Updated styles to ensure that h2 and h3 are smaller than h1
Improved handling of clojurescrpt files...

* Find all processable files in one pass to preserve order.
* Added .cljx to the set of processable file extensions.
* Use set as predicate instead of regex. Maybe down the road this set
  could be configured by users in their project.clj files?
Sort files by namespace :)
Merge pull request #130 from OtherPeoplesPixels/master

Improve cljs file support and sort by namespace