Update Home Alarm Device Type

Adds the ability to send a command to the AD2Pi.  Normally sends the command "C" which returns the current address of the AD2Pi.  You can input an additional command into the preferences and the "AD2Pi Config" tile will send the appended command.  

For example to set the AD2Pi address to 31:
Press the "preferences" tile
Enter "ADDRESS=31" into the text field for AD2Pi Command
Hit Done
Press "AD2Pi Config" Tile
This will change the device address in eeprom to 31 and return the message "ADDRESS=31"