Bumps rspec to 3.0.0.beta2 and fixes deprecation warnings
updated matchers to work with rspec 3.0.0
Added alias failure messages for rspec 3.0.0
Merge branch 'release/1.8.0'
Merge branch 'release/1.8.1'
Merge branch 'release/1.8.2'
Merged upstream master and bumped rspec to 3.0.0 (release)
Merge branch 'refs/heads/andypike-rspec3' into feature/rspec_3
Merge branch 'refs/heads/poreta' into feature/rspec_3
Reverse alias and only apply when needed.
Deprecate future support of RSpec 2.
Changelog entry for RSpec 3 support.
Merge branch 'feature/rspec_3' into develop
Merge branch 'develop' of github.com:CanCanCommunity/cancancan into develop