JSDoc coverage for Should and Expect

[Soviut]

The Assert interface has JSDoc coverage but Should and Expect don't. In order to keep documentation in sync, this would be good to propagate.

[keithamus]

@Soviut thanks for the issue - sorry I seemed to have missed this one before. Please feel free to make a PR, and we can merge it in and get the documentation in sync!

[reggi]

@Soviut What do you mean Asset has JSDoc coverage? Where is this documented?

[Soviut]

@reggi The Assert library has JSDoc comments, Should and Expect don't. Here's an example https://github.com/chaijs/chai/blob/master/lib/chai/assertion.js#L24

[reggi]

Gotcha @Soviut thanks for the explication!