add GitHub Flavored Markdown to README

* This makes the example code easier to read,
  especially when perusing the docs on github
Merge pull request #35 from phlipper/patch-1

add GitHub Flavored Markdown to README
rails 4 fix
Merge pull request #37 from smasry/rails4

rails 4 fix
Merge Rails 4 fixes from ryantos repo with all the nice fixes from mindeavors repo together