v1.4.1. Improvement.

- v1.4.1 March 16, 2013
	- Added `npm-shrinkwrap.json` that ensures `js2coffee` uses
`coffee-script` 1.4.0
	- Updated dependencies
		- coffee-script 1.4.x to ~1.6.1
		- joe 1.0.x to ~1.1.1
		- js2coffee 0.1.x to ~0.1.3