WIP init

- installs `gae.pth` file as prescribed by [blog post](http://www.anler.me/blog/2012/jun/google-app-engine-in-virtualenv/) [anler.me].
- attempts to robustly determine `site-package` location

## TODOS

- detect virtualenv and/or
- make robust solution that works with non-virtualenv setup ( **important** )
- fill out lots of other niceties (listed in TODOS)