Initial commit

Add the gsmModule class that takes care of the gsm/serial communication
Add the view class that provides a gui to the gsm module
Update readme
Fix compile, don't create serial port in gsmModule class

- Fixed signal emission/reception
- Fixed text color
- Create the serial port object in the gui class instead of the
gsmModule class (improves modularity of the gsmModule)
Add possibility to send lines on the serial port
Add documentation + misc cleanup
Recieve serial data
Started implementing PIN code sending