rr at /Users/damselem/.rvm/gems/ruby-1.9.3-p0@cra/bundler/gems/rr-91f638cee364 did not have a valid gemspec.
This prevents bundler from installing bins or native extensions, but that may not affect its functionality.
The validation message from Rubygems was: ["scratch.rb"] are not files
After specifying branch to use in my Gemfile like:
I got the following after running bundle install: