Update cukes to tag ruby file doc strings with "ruby" so we get syntax highlighting on relish
Created by: myronmarston
An example from VCR:
https://github.com/myronmarston/vcr/blob/master/features/cassettes/naming.feature
Notice """ruby
-- that allows relish to know which language the code is, and apply syntax highlighting (as seen here). we should do the same for all of rspec's cukes so we get syntax highlighting, too.