Revert "Merge branch 'pep8'"

This reverts commit 50db8ee91d874bcee8920f3fc394f7269620c664, reversing
changes made to 30d31874952005c1a6317e3d96d23f99bbcc530b.
Merge pull request #3 from skorokithakis/master

PEP8ify.
Merge pull request #4 from skorokithakis/master

Create output directory if it doesn't exist, make script executable.
added checking for base_port
renamed output directory
fixed flake8 errors