install redcarpet gem
Add Helper to render text as HTML using Markdown Syntax

* Pages are written in Markdown, meaning they need to be converted to
  HTML when they are viewed.
* This helper uses RedCarpet to parse the text its given and returns
  the generated HTML
  * It will be used like this in the views: `<%= @page post.body %>`
Merge pull request #12 from LockeCole117/render-page-content-as-markdown

Render page content as markdown, Closes #5