start 1.1.1 changelog, include elasticsearch_river fix
start 1.1.1 changelog, include elasticsearch_river fix

tinglinux/logstash-kafka,tinglinux/logstash-kafka,Aloomaio/logstash-kafka,joekiller/logstash-kafka,opentable/logstash-kafka,joekiller/logstash-kafka,opentable/logstash-kafka,Aloomaio/logstash-kafka