chore(docs): make it more awesome

* cleanup heroku deploy instrunctions.
* collectstatic is run automaitcally by heroku
* includes 'getting started' section in generated code.
* add 'createsuperuser' explicity, as migrate will not
  add them by default. (Until it's fixed in https://github.com/pydanny/cookiecutter-django/issues/39)
Merge pull request #91 from theskumar/docs-update

chore(docs): make it more awesome