Addition for issue #2.

Issue #2 is a good addition, but using /usr/bin/env is more appropriate to help users deal with multiple python versions. 
ie. a user has socksipy for python 2.7 but /usr/bin/python is the python3 binary, which does not have socksipy installed. Instead of reinstalling socksipy for python3, they can simply update their python path on their shell in order to execute the script with the desired versions.