add general server implementation
Merge pull request #54 from ErikFang/realtime

add simple GenServer
Merge pull request #29 from dianping/realtime

Realtime sync
add message produce/subscribe protocol
Merge pull request #56 from ErikFang/realtime

add message produce/subscribe protocol
Merge pull request #30 from dianping/realtime

Realtime sync
add collectornode persistent module implementation
Merge pull request #57 from ErikFang/realtime

add collectornode persistent module implementation
Merge pull request #31 from dianping/realtime

Realtime sync
add MessageAndOffset.java
Merge pull request #58 from ErikFang/realtime

add MessageAndOffset.java
Merge pull request #32 from dianping/realtime

Realtime sync
add some message protos about consumer
add consumerIdString into offsetcommit.protoc
Merge pull request #59 from LantaoJin/realtime

add some message protos about consumer
Merge pull request #10 from dianping/realtime

sync
Code integration of consumer
add GenClient
Merge pull request #61 from ErikFang/realtime

add GenClient
merge