Update docstring to accurately reflect protocol
Link from README to TUTORIAL
Corrects the stated default value for connect_timeout in the tutorial
Fix typo in tutorial
Wrapped _socket.close in its own try-except.
Fixes the bug described in Issue #34 in beanstalkc:
https://github.com/earl/beanstalkc/issues/34
Merge pull request #35 from Doerge/socketclose_fix

Wrap socket#close in its own try-except