Made changes in preparation of 0.1.2 release.
Made create-admin easier to use from script.

* Password may be specified on the command line, via an environmental
  variable, or if neither can be used the user will be prompted.
* The create_admin.py script is now importable and the create_admin()
  function may be used directly from a python script or the python
  interactive interpretor.
Added 2013 as release date in copyright headers.

* Nearly every file in the repo was touched.
Release 0.1.3.
Better error messages for bad keyword arguments.

* Fixes 143.
Merge branch 'master' into v0.2dev

Conflicts:
	galah/sheep/app/consumer.py
	galah/sheep/app/producer.py
	galah/sheep/sheep.py
	galah/sheep/suite.py
	galah/shepherd/shepherd.py