Remove warnings

[steveklabnik]

coveralls currently throws a few warnings when I run it with my test suite. These commits remove them.

The second commit might be tackled another way, but the extend self makes it really confusing if you're on a module level or not. Like, I think I could just set the class variables inside of setup!, but I'm not 100% sure, and this seemed clearer.

[coveralls]

Coverage remained the same when pulling 12d0e39 on steveklabnik:remove_warnings into 62cf552 on lemurheavy:master.

[nickmerwin]

Thanks @steveklabnik !

[steveklabnik]

Any time!