add support for loading ember-data
Merge pull request #18 from apmorton/add-ember-data

add support for loading ember-data
Upload file contents, not file name
Refactor publish.rb
Publish SHA revision to shas directory.
Handle tagged releases.
Handle stable releases.
Prefix tagged releases by /tags/.
Also generate `/*-latest.{prod.js|min.js|js}`.
Add /daily/YYYMMDD/*.{js|min.js|prod.js} files.