Remove workaround from cff02284.
Apply temp patch for Travis, RVM, and Ruby 2.1.0
Add Ruby 2.1.x and Rails 4.1.0 proper.

Use 2.1 fuzzy matching.
Attempt to force MRI 1.8.7
Add issue links for recent changes.
Merge pull request #1015 from rspec/fix-2-1-0-build

Update `.travis.yml` to workaround CI issues.