Cleaned out some unneeded 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.