Add logging mechanism and multi build debug messages (#16)

This pull request adds [Winston](https://github.com/flatiron/winston#working-with-transports) one of the more popular Node logging modules for logging which easily allowed adding the `--quiet` and `--verbose` flags. Also adds some debug messages for the multi build (as described in #16).

![screen shot 2014-05-29 at 1 09 02 pm](https://cloud.githubusercontent.com/assets/338316/3122313/e0ecc0e4-e765-11e3-80fd-fd316980bb2a.png)