Make glob calls work with python 3.4

Created by: pastly

After merging #105, Travis will start complaining about glob() not working in python 3.4

https://travis-ci.org/pastly/simple-bw-scanner/jobs/370246149

https://docs.python.org/3.4/library/glob.html

Debian Jessie comes with 3.4, so we should probably support it.