Updated docs, contributors, namespace documentation about ACL.

Making room for the exception_handler_decorator support.
Merge remote-tracking branch 'origin/master'
MaintainerS
Hmm, tests on Travis are marked as passing but they're really not.
Give API docs a booster :)
Added support for an exception_handler_decorator .. + documentation.

TODO: test it.. (I ran local tests, but wrote nothing in tests/)
workaround for incompatibilities with gunicorn >= 0.17.0
see esp. https://github.com/benoitc/gunicorn/commit/b7b51adf13e92044211b267ba07e3498585f219a
add an ugly redundant compatibility hack to support gunicorn < 0.17.0
Added support for the `log_file` attribute when creating the server.  Allows
you to redirect the access log to a file (or /dev/null) instead of `stderr`
as pywsgi does it by default.

This also works in the .ini through the "paster" integration thing.
gunicorn.py: cleanup that weird javascript-ish line splitting :)

Python is okay with dangling comma, so let's do it
Merge remote-tracking branch 'datadealer/master'

Fix the comma placement at the same time.

Conflicts:
	socketio/sgunicorn.py
docs: Little space that affected the layout in the rendered docs.
Fix get_inital_acl documentation

* Use set in the example as sets are required for acl
* Use recv_connect instead of on_connect
Merge pull request #129 from TronPaul/master

Improve get_initial_acl documenation
Merge branch 'refs/heads/master-core'