Channels 2 upgrade

[nemesifier]

Thank you @atb00ker for your outstanding work! I've fixed the test and performed clean up.
Let's see if the travis build passes.

Closes #7 and #8.

[coveralls]

Coverage remained the same at 100.0% when pulling b731eef on channels2 into 7fe814e on master.

[atb00ker]

@nemesisdesign , the file pytest_channels.py needs to be renamed to back test_channels.py.
I changed the name because i was running the file in a different manner! Currently that file is not running, hence the decreased coverage!

[nemesifier]

@atb00ker oh I didn't notice that.. I already changed the logic again.. but anyway, I think now it's better, the result is cleaner and I undertsood how to make sure the pytest suite runs fast (it was running very slowly in my env because the db was being recreated at each test).

What do you think? Can we merge?

[nemesifier]

PS: coveralls now reports 100%, not sure why it hasn't posted the result here: https://coveralls.io/builds/18793941

[atb00ker]

LGTM 👍