Merge pull request #95 from haio/master

Fix strict mode issue
Fix the way handle zk error
0.2.8
add support to fetch from specific offset in Consumer.addTopics
Merge pull request #100 from ValYouW/offset-support-add-topics

add support to fetch from specific offset in Consumer.addTopics
README
0.2.9
Emit error event in producer
0.2.10