Add Mocha and Chai to CoffeeScript page

[hobovsky]

Page on CoffeeScript does not mention that Mocha and Chai are available. I went with the old framework before I noticed that I can use more modern setup.

[kazk]

CoffeeScript doesn't use Mocha. I don't know why it's installed. describe/it (from cw-2.js) and assertions from chai can be used to make it "look" like Mocha + Chai.

[hobovsky]

So describe and it which worked for me were not Mocha but CW framework? Okay, good to know!

Should Chai be added to the page, or there is nothing to change then?

[kazk]

Feel free to add it.