Use 'raw' mode for stylize in 'spec' reporter

Hello. _Vows_ is one of the most beautiful testing systems I've ever used! :smiley:

However I've got confused a little bit by _spec_ reporter's output when I added some 'special characters', like "__*__", to my topic title.
So I decided to use stylize's _'raw'_ mode for _spec_ reporter as well.
Things like `stylize(event, 'bold')` will still work. However users won't get confused when they have some special characters like "__`__" or "__*__" in their vows title.
Example: `first item's number matches regexp: /^\d[\d.]*\.\d*$/`
Thank you very much.