Description of problem:
A feature was added to python-2.6 and python-2.7 for compatibility with other python application platforms.  It will also apply to python-3.3 when we switch from the community cart to SCL.

If the file "requirements.txt" exists at the top of the application, then pip will be used to install requirements from that file.


For example:
rhc app-create rmpy27 python-2.7
cd rmpy27
echo "cython" > requirements.txt
git add requirements.txt
git commit -a -m 'Added cython"
git push