Create __main__.py

[szabolcsdombi]

I prefer not to add the Scripts folder to my PATH.

• adding a __main__.py allows one to call:

python -m prospector <args>

[coveralls]

Coverage decreased (-0.1%) to 58.758% when pulling 5359661 on cprogrammer1994:master into 341ac52 on landscapeio:master.

[carlio]

@cprogrammer1994 Thanks! New version is now on PyPI with this in it - 0.12.6

[szabolcsdombi]

Thanks! I will test it out