find_packages call in setup.py should exclude tests folder

[z11373]

Hi, we're running into the issue which both packages (streamparse which depends on pystorm) are trying to install init.py file on the same location (under test folder), I was told the culprit is https://github.com/Parsely/streamparse/blob/master/setup.py#L55 and it's supposed to be using:

find_packages(exclude=["tests"])