changed requirements.txt to Django 1.5
attempt one at creating new postgis fabfile
refactored the create_database function to use the new functions in Postgis 2.0 and removed legacy cruft.
updated requirements.txt to install Django 1.5.x to stay up to date.
added git clone command to readme
updated README, foreal.
added double quotes to escape dashes in username
Tweaked create_database to fix syntax error, removed django settings part (not sure if it's needed)
Adding more info to heroku setup