Test with Ruby 2.1.0 on Travis and add it to the supported Rubies
Merge pull request #81 from thenickperson/ruby-2.1

Test with Ruby 2.1.0 on Travis and add it to the supported Rubies
Renamed symlink command to link.
Merge pull request #87 from JCook21/Consistent

Rename "symlink" command to "link" (with backward compatibility)
Merge remote-tracking branch 'upstream/master' into no-jeweler