use 'python' instead of 'python2.7'.
use 'python' instead of 'python2.7'.

I don't know of any current distributions where 'python' is a python
3 binary, and this should mean the executable script works unedited
on systems where it's python 2.6 or 2.7

frostyfrog/mark2,SupaHam/mark2,frostyfrog/mark2,SupaHam/mark2