Added Tailor Rake task

Added [Tailor](https://github.com/turboladen/tailor) Rake task as discussed in https://twitter.com/fabiopelosin/status/392231602014527488.

Sample output: https://gist.github.com/irrationalfab/3053ec1d6bc1c0a1eb29

@alloy, @mneorr, @orta