Add note to DEVELOPMENT about local PYTHONPATH option.
Add note to DEVELOPMENT about local PYTHONPATH option.

dimagi/rapidsms,dimagi/rapidsms,ken-muturi/rapidsms,dimagi/rapidsms-core-dev,dimagi/rapidsms-core-dev,lsgunth/rapidsms,ehealthafrica-ci/rapidsms,lsgunth/rapidsms,ken-muturi/rapidsms,catalpainternational/rapidsms,rapidsms/rapidsms-core-dev,eHealthAfrica/rapidsms,peterayeni/rapidsms,lsgunth/rapidsms,lsgunth/rapidsms,peterayeni/rapidsms,unicefuganda/edtrac,rapidsms/rapidsms-core-dev,caktus/rapidsms,peterayeni/rapidsms,ehealthafrica-ci/rapidsms,unicefuganda/edtrac,eHealthAfrica/rapidsms,catalpainternational/rapidsms,unicefuganda/edtrac,catalpainternational/rapidsms,catalpainternational/rapidsms,caktus/rapidsms,eHealthAfrica/rapidsms,caktus/rapidsms,ehealthafrica-ci/rapidsms,ken-muturi/rapidsms,peterayeni/rapidsms