[#26] Paster command to push to datastore.

* No celery required for this command.
Merge pull request #27 from okfn/26-cron-script

Paster command to push to datastore. (Fixes #26)
Fixed error in tasks.py on running paster celeryd

When following the instructions to install and run datastorer,
the command "paster celeryd" results in "ImportError: No module
named py".  This change fixes the error.
Merge pull request #28 from abrobston/master

Fixed error when running "paster celeryd".
Merge branch 'master' into 24-fix-condition

Conflicts:
	ckanext/datastorer/commands.py