made python path/env more robust

![problem](https://f.cloud.github.com/assets/1972459/1629053/8789265e-5729-11e3-8f68-2bed16c7adc9.jpg)

This problem occurs when a user installs the dependencies to their usr/bin/local/python and the cl-meats client to a system level Library directory. The fix allows the program to run using the current user's environment defined version of python and it's installed modules.