Added info on how to pull in upstream changes with git.
Added info on how to pull in upstream changes with git.

QLGu/djangopackages,benracine/opencomparison,cartwheelweb/packaginator,pydanny/djangopackages,nanuxbe/djangopackages,nanuxbe/djangopackages,audreyr/opencomparison,cartwheelweb/packaginator,miketheman/opencomparison,cartwheelweb/packaginator,QLGu/djangopackages,pydanny/djangopackages,nanuxbe/djangopackages,pydanny/djangopackages,benracine/opencomparison,audreyr/opencomparison,QLGu/djangopackages,miketheman/opencomparison