Update pep8 command docs
Update pep8 command docs

eHealthAfrica/rapidsms,lsgunth/rapidsms,peterayeni/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,peterayeni/rapidsms,peterayeni/rapidsms,ehealthafrica-ci/rapidsms,lsgunth/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,catalpainternational/rapidsms,ehealthafrica-ci/rapidsms,catalpainternational/rapidsms,caktus/rapidsms,peterayeni/rapidsms,catalpainternational/rapidsms,ehealthafrica-ci/rapidsms,caktus/rapidsms,catalpainternational/rapidsms,caktus/rapidsms