add build status
change build status url
provide travis config
remove jdk changer
fixed empty broker for topics
dynamic port checker for unit test (https://travis-ci.org/adyliu/jafka/)
fixed broker parser on ip v6
fixed the correct port for test
support timeout for SocketChannel; assign some maven plugin versions
https://github.com/apache/kafka/blob/a260bfacaee251b4f23236a71651cfb87ce3f6d7/core/src/main/scala/kafka/network/BlockingChannel.scala
Fix commit() in zk consumer for compressed messages
enforce broker.id to be a non-negative integer
commit offsets before stopping the consumer
clean some codes

Signed-off-by: Ady Liu <imxylz@gmail.com>
fixed a javadoc error
fixed some comment
Merge pull request #2 from adyliu/master

合并原作者更新