sphinx: Configure sys.path to allow autodoc to find Kazoo.

Previously, if Kazoo wasn't already in sys.path otherwise (e.g. if not
installed) sphinx autodoc wouldn't be able to find the module for
documenting purposes because sphinx-build happens in an adjacent
subdirectory.

This adds the docs folder's parent to the path so that autodoc can find
the Kazoo module properly and do its stuff.
fix the socket timeout, _session_timeout is ms
fix typo in attribute name
Merge pull request #121 from xpahos/master

LockingQueue documentation update
tweak message for #121 and add changelog entry
Merge pull request #114 from spladug/autodoc-sys.path

sphinx: Configure sys.path to allow autodoc to find Kazoo.
Point to new location and update to gevent 1.0rc3, closes #123
Fix `KazooRetry.copy` to correctly copy sleep function, closes #126.

The introduction of the new `ignore_expire` argument changed the positional
order of arguments. Use keyword arguments!
Fix command retry typo in client
try to fix gevent 0.13.8 installation while keeping 1.03c3 working
Merge pull request #128 from cosbynator/master

Fix command retry typo in client
add changelog entry for #128
also tell travis to use gevent 1.0rc3
Merge pull request #118 from novas0x2a/fixes

a few minor fixes
minor style tweaks, add changelog entry for #118
stop calling out companies and mention large number of contributors instead
prepare
vb
- Issue #119: Handler timeout takes the max of the random interval or
  the read timeout to ensure a negative number isn't used for the read
  timeout.
remove convoluted use of itertools

This usage of itertools doesn't realy add anything of value and it kind
of makes things more complex.  Instead, rely on your HostIterator object
to correctly return an iterator and stop when it runs out of hosts