Neaten main.py
Neaten main.py

- Change the #! to /usr/bin/env as it is more flexible 
- split all imports to a separate line as per PEP 8
- remove unused imports
- change file reading to use the `with`
- use 4 space indentation as per PEP 8
sotonrobodev/Automount,sotonrobodev/Automount