Merge pull request #349 from JustRamires/master

Add cpp translation to Handling Interrupt Signals section
Update Clojure examples to use cljzmq
Update contributors to include Trevor Bernard
Merge pull request #350 from trevorbernard/clojure

Update Clojure examples to use cljzmq
Updated identity check example to use correct method call when sending a ZMQ::Message

The correct method in the latest version of the `ffi-rzmq` gem used to send a message via a socket is `#sendmsg`.

See http://rdoc.info/gems/ffi-rzmq/ZMQ/CommonSocketBehavior#sendmsg-instance_method for more info.
Merge pull request #351 from alakra/master

Updated identity check example to use correct method when sending a message
Python 3 compatibility in sync*ub.py
set SNDHWM in syncpub.py

matches C example, and avoids hangs / dropped messages

closes zeromq/pyzmq#400
Merge pull request #352 from minrk/syncpub

update node sync Python examples
Fix for working identities in ppqueue.c
Merge pull request #353 from lhope/ppqueue

Fix for working identities in ppqueue.c
Fix for subtree in clone.py