Merge pull request #30 from miniway/master

handle ConcurrentModification Exception
Merge pull request #31 from miniway/master

ZMsg.send returns boolean value
Merge pull request #35 from miniway/master

Issue #32 jdk epoll bug workaround and
Merge pull request #38 from miniway/master

moving namespace from org.jeromq to org.zeromq
LIBZMQ-497 send unsent data in encoder buffer at termination
make jzmq compatible and update examples