add unit tests
add unit tests

Add tests to confirm Crafty.bind and Crafty.unbind behavior;
Add unit test for Crafty('*') [which currently fails, a known issue];
Force tests to run in order; they were not written atomically;
Add note to developers for how to run these tests conveniently.

mucaho/Crafty,starwed/Crafty,mucaho/Crafty,craftyjs/Crafty,maciekwie/Crafty,maciekwie/Crafty,starwed/Crafty,starwed/Crafty,maciekwie/Crafty,craftyjs/Crafty,mucaho/Crafty,craftyjs/Crafty