Fix for OS X installation

Hello,
I've tried to install and run userapi on my system – OS X 10.8.4 – with Python 3.3.0 and pip 1.4.1. But when I was installing requirements, it crashed. After short research in Google I've found that the problem is with old distribute version. https://github.com/pypa/pip/issues/650#issuecomment-20931366