Added Docstring to test for text_wrapper.
Added Docstring to test for text_wrapper.

UWPCE-PythonCert/IntroPython2016,weidnem/IntroPython2016,UWPCE-PythonCert/IntroPython2016,weidnem/IntroPython2016,UWPCE-PythonCert/IntroPython2016,weidnem/IntroPython2016