init version. This application is my first program under Go. It is based on nsq, which is a message distribution system developed by Go.
It supports to explicitly bind to one nsqd and communicate with each other through the same 'room', which is corresponding to a topic in nsq.
TODO:
   Add supporting of nsqlookupd, so that we could connect to more nsqd automatically.
add readme
Merge github.com:peteryj/nsq_chatroom
update READ.md