Add Basic Matchers

[Ellisande]

What kind of issue is this? (bug, feature, etc)

Feature

What is the proposed change?

Add new matchers on to the the list of available ones

• [ ] RegexMatcher - matches based on a provided regular expression
• [ ] IsAMatcher - matches based on instanceof
• [ ] AnyStringMatcher - matches based on whether or not the arg is a string
• [ ] AnyNumberMatcher - matches based on whether or not the arg is a number

[Ellisande]

Some example implementation of existing matchers:

• https://github.com/Ellisande/mockolate/blob/master/src/matchers/exact.js
• https://github.com/Ellisande/mockolate/blob/master/src/matchers/any.js

The pull request that added matcher support:

• https://github.com/Ellisande/mockolate/pull/8