Added vanity_experiments helper to return a hash containing a read-only copy of the current page's experiments and their alternatives
Remove white space
Fix respond_to? for ruby 2.0
Add ruby 2.0.0
Add ruby 2.0 travis test coverage.
Update appraisal gem and source for rubygems.

Use current https source for rubygems, avoid annoying warnings.
Update appraisals's generated gemfiles.
Turn on mongodb for travis.
Allow failure on ruby2.0, not supported yet.
Merge pull request #126 from ShelbyTV/vanity-experiments-helper

Added vanity_experiments helper for rails to return read only copy of active experiments