Slight cleanup in the get_arbiter docstring to avoid autodoc errors
Added the FancyStdoutStream to the configuration docs
Added a docstring and option to configure the timestamp format.
Removed a specific count in the configuration for the different streams available.
Added tests for the FancyStdoutStream

This includes some changes to the class to allow injecting pieces that
typically would be challenging to test in isolation (the timestamp and
stdout).
Merge remote-tracking branch 'upstream/master'

Conflicts:
	circus/stream/__init__.py
Allow the watcher to be configured but not started #283

Here is an example: ::

  [watcher:foo]
  cmd = python -m myapp.server
  start = False

This will set up the watcher but it will not be started when the
arbiter starts.
Refactored for clarity

 - Moved the starting of a watcher to its own function
 - s/start/autostart
 - set the autostart directly in the watcher
Added tests for autostart and the arbiter level warmup delay

Note: This adds mock as a dependency in the test-requirements.
Merge pull request #348 from ionrock/feature/283-autostart-config

Fix for #283 - Make autostart available in the watcher config