basic post & delete functionality for environments
basic combinatorics in patch
environments need put after all
environment PATCH with include and exclude
update release notes
adding new how to
more commentary and documentation
Merge pull request #24 from klrmn/env_api

API for environments, including PATCH for combinatorics

LGTM
Upgrade to Django 1.4.5 dependency
Merge branch '1.4.5' into dev