Merge pull request #119 from haio/master

Add pause&resume to consumer
README
Merge branch 'master' of github.com:SOHU-Co/kafka-node

* 'master' of github.com:SOHU-Co/kafka-node:
  Add pause&resume to consumer
improving the rebalance code
Merge pull request #126 from ripjar/master

improving the rebalance code
Fix reconsume message after broker recovery in HighLevelConsumer