There are already a lot of functions in bemto, and a lot of them can be somewhat conflicting. Adding more functions or changes to the existing ones can be harsh now: I need to be sure that nothing is broken.
So. We need tests. As Jade uses Mocha, it would be nice to use it there too.
Added some basic tests for #11
Added some basic tests — almost everything from the docs. However, there are a lot of smaller things and edge cases that are not covered by doc, so they must be tested too.