Fix test if no color is used on generator output.
Updating activerecord to 4.0.0.
Copy 4.0.0 Gemfile over to gemfiles directory so we keep testing it.
Make travis run tests for Rails 4.0 Gemfile.
Merge pull request #468 from lunks/copy-rails-4-gemfile-to-gemfiles-directory

Copy rails 4 gemfile to gemfiles directory