Adding base pylint rcfile and plugin for unittests.

I'd guess it's the presence of the comment in between but you're right it's a bit of a dissonance.

[PEP8][1] does say: 

> Method definitions inside a class are separated by a single blank line.

so it seems this line should have remained.

[1]: http://legacy.python.org/dev/peps/pep-0008/#blank-lines