added git repository to pull down the code when setting up a new environment

docs/pip-requirements.txt

@@ -2,3 +2,4 @@ Django==1.5.1
 South==0.8.1
 distribute==0.6.34
 wsgiref==0.1.2
+-g git+http://github.com/sfrischkorn/rockviewer.git#egg=rockviewer