#230 Replace PUT with PATCH for repos

 - Rails 4 by default uses PATCH for updating records. So the Edit repo
   link generated PATCH link.
 - Changing the route from PUT to PATCH, the incoming request is
   successfully directed to repos#update action.
Fix Gemfile.lock

Gemfile.lock had a bad SHA for puma_auto_tune gem
Merge pull request #232 from arthurnn/fix_lock

Fix Gemfile.lock
Dont submit a empty favorite_languages
Bump rails to 4.0.4.rc1
Merge pull request #233 from arthurnn/rails_4_bump

Rails 4 bump + bug fix
Merge pull request #231 from prathamesh-sonpatki/issue-230

 #230 Replace PUT with PATCH for repos
Bump dalli gem
Add arbitrary repos by their full GitHub URL

Fixes #184