Cleaned out some unneeded docs.
Removed unused class docs.
Merge branch 'working' of github.com:rackspace/pyrax into working
Updated release info
Correct a problem where novaclient was making an unnecessary call to auth.

Fixes issue: https://github.com/rackspace/pyrax/issues/4
Added the 'halfClosed' parameter to the load balancer create() call.
Updated the version and release info.
Added support for keychain storage of credentials for authentication.
Regenerated the class docs.
Updated pyrax doc.
Fixed release date in RELEASENOTES.md.
Merge branch 'master' into working
Added some novaclient exceptions to the pyrax.exceptions namespace to make it easier to handle them in applications that use pyrax.
Updated setup.py to reflect that pyrax is no longer beta (should have been done with 1.2.0). Removed unneeded import.
Fix for issue #6: the Node __init__ code was not allowing creation of objects representing existing nodes in DRAINING condition.

https://github.com/rackspace/pyrax/issues/6

Also removed some stray debugging output from the client class.
Merge branch 'maint' into working
temp master
Merge branch 'temp' into working
Updated the class docs for version 1.2.5
Fixed an incorrect example call. GitHub #7