Test that Cookbook#publish_version! saves the README
Cookbook#publish_version! only takes one argument
Rename CookbookUpload::Readme to CookbookUpload::Document
Extract CHANGELOGs from tarballs
Display a CHANGELOG tab if a cookbook version has one
Fix README/CHANGELOG file extension bug
Rename render_markdown helper to render_document
Default CookbookUpload::Document extension to ''
Merge pull request #715 from opscode/store-and-display-changelogs

Store and display CHANGELOGs