/usr/bin/env instead of python3 hardlink

Signed-off-by: Joost Bremmer <toost.b@gmail.com>
Add execution permissions for this branch as well, just to be sure.

Signed-off-by: Joost Bremmer <toost.b@gmail.com>
Merge pull request #4 from ToostInc/env-python

/usr/bin/env instead of python3 hardlink