[zeromq-dev] ZeroMQ contribution policy - updates

[Pieter Hintjens]

Hi Folks,

Two small additions to the policy [1]:

* Please use real names on github, not aliases (so we know who we're
getting code from)
* Please update NEWS if you fix a patch or add functionality, and use
the 2.1 NEWS format [2]

Note that the next released version will be 3.1.1.

Thanks!

-Pieter

1: http://www.zeromq.org/docs:contributing
2: https://github.com/zeromq/zeromq2-1/blob/master/NEWS