Add Ruby 2.1.0 to .travis.yml
Merge pull request #226 from salimane/pr_ruby_2_1_0

Add Ruby 2.1.0 to .travis.yml
change jruby-1.7.4 to jruby
use the actual rspec rake task
Added Ruby 2.1.0 to Travis.  Updated JRuby to 19mode.  Got Rubinius specs running, if not passing.