Fixed comment typo
Preparing for PyPi layout
Adds registrar class
Basic working listener and registrar
Adds remove device method
Fixes add device errors
Adds logger
Fixes undefined _adding_device
Adds list-devices feature
Return filehandle to log for daemon
Adds remove device method
Adds prompt when adding device
Logger now converts value to int
Add updated script
Update README and rename GPL3 to LICENSE
Add details to setup.py
Add OS check for conf and listener
Add usage.txt
Remove py extension from bin/usblock
Fixes license filename in usblock