Add missing comma to cookiecutter.json

which meant it wasn't valid json - should be ok now
Another json fix

and some docs to replace the comment
Add sensible default robots.txt files for staging and production.
Merge pull request #12 from aptivate/robots_txt

Add sensible default robots.txt files for staging and production.
Use git flags compatible with older versions
settings - allow local_settings to add to dict settings
Use git flags compatible with older versions
Merge branch 'develop' into tasklib_refactor

* develop:
  Use git flags compatible with older versions
  settings - allow local_settings to add to dict settings
  Add sensible default robots.txt files for staging and production.
  Another json fix
  Add missing comma to cookiecutter.json