update roadmap with 0.11 release date
update roadmap with 0.11 release date

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