Merge upstream

PR to make visible forked changes.

* Format README as markdown
* Remove Capistrano files from being tracked in Git allowing each instance of this application to decide how they deploy the code based off the example files.
* Minor bug fix in Documents controller that referenced uninitialized variable.
* Removed Walkthrough link from edit instructions per request
* Update email addresses in the static HTML pages in each skin
  * The links use a very simple attempt to hide the email addresses from bots using javascript
* #1