Add get_group_coordinator, __get_topology methods to allow for the retrieveal of the IP address of the Sonos system that is coordinator for the group containing a specified zone
use really_utf8 in __get_topology
Added title to metadata to adhere to new requirements
Merge pull request #18 from KennethNielsen/fix_tunein_example

Added title to metadata to adhere to new requirements
Merge Use safe encode in topo coordinator #8
raise exceptions instead of returning error info
mention raised exceptions in docstrings
move SoCoExceptions to soco.exceptions
don't return True on success

this is unnecessary as we're raising exceptions on error anyway
Merge 'upstream/master' into unittest to keep up to date with exception commits
Updated to correspond with exception work and fixed a few style issues