First candidate test

Hi! I had some doubts about laces arrays, so instead of asking or going by trial and error, i wrote some tests.

Mocha worked pretty good with yeoman, it was super fast to set up. I really like mocha. The only doubts i have about this test structure are:

 - they are not using javascript modules, while i had liked to use them
 - i'm not sure how well this structure will integrate with travis

Since i relied on this https://github.com/yeoman/generator-mocha yeoman generator, i hope this is pretty much the standard way to use mocha, and it will integrate good with travis.

Now, coming to the test *content*. One test is succeeding, the other one is failing. What would be the correct way to remove an element from a laces array? This was my initial question that lead me to write the test.