Update docs/source/design.rst

phrasing correction
support rotation in FileStream
add documentation for max_bytes/backup_count stream parameters
Replace the gevent-zeromq fork with pyzmq==2.2.0.1 in
web-requirements.txt
Silence pyflake warning
Merge pull request #333 from dekkers/pyflake

Silence pyflake warning
Merge pull request #332 from dekkers/change-web-requirements-to-pyzmq

Use pyzmq in web-requirements.txt
Merge pull request #330 from santagada/master

Small correction to docs.
add Zohar Zilberman to NOTICE
Merge pull request #331 from popen2/master

Rotation support in FileStream
Add a sleep to poll_for instead of spinning

When using gevent the sleep gives the greenlets responsible for
redirecting stdout/stderr a chance to run.
Do not create CircusClient twice, it's already created by TestCircus
Merge pull request #335 from dekkers/do-not-create-circusclient-twice

Do not create CircusClient twice, it's already created by TestCircus
Add myself to NOTICE
Merge pull request #334 from dekkers/add-sleep-to-poll_for

Add a sleep to poll_for instead of spinning
Fix pyflake errors
Support either PyZMQ >= 2.2.0.1 or gevent_zeromq when setting stream_backend to gevent
Do not reload the ioloop module
Do not unnecessarily call Popen with shell=True and give the circus
process some time to terminate after sending SIGTERM
When using gevent, use gevent.signal to install the signal handlers