Surround the contents of authenticate in a try except clause to prevent Mumble from detaching the authenticator.

Signed-off-by: Tyler O'Meara <Tyler@TylerOMeara.com>
Merge pull request #27 from Acidity/feature/handleExceptions

Surround the contents of authenticate in a try except clause to prevent ...
Update service.py
Merge pull request #29 from mglinski/develop

Fix time comparison issues
Update service.py
Merge pull request #30 from mglinski/develop

Fix time comparison issues
Update the link to the mumble set-up guide.

Signed-off-by: Tyler O'Meara <Tyler@TylerOMeara.com>