change script call line

The script call was changed to

  #!/bin/env python

Because this way it can also recognize calls inside a virtualenv correctly.

See Issue #20 for more details.

Signed-off-by: Erik Bernoth <bernoth@dresearch-fe.de>
Acked-by: Steffen Sledz <sledz@dresearch-fe.de>
Acked-by: Eik Binschek <binschek@dresearch-fe.de>
Merge branch 'f-better-binary-call-v2' into dev