added readme to lib
added readme to lib

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