Added new command line parameters --init and --port.
--init specifies initial width values for servos:
    --init=servo:width,servo:width,...
--port specifies TCP port to listen for commands, so servod can be controlled remotely.
Simple netcat script 'servoctl' created to send commands to servod:
    servoctl <command>
Edit servctl variables $ADDR and $PORT to access servod remotely.
Supported commands so far:
    debug -> prints debug information
    stop  -> terminates servod
    reset servo{N|Pin|Gpio} -> resets servo to initial position specified in --init
    set servo{N|Pin|Gpio} width{N|Nus|N%} -> sets servo pulse width
    get servo{N|Pin|Gpio} [info] -> gets servo current pulse width or dumps servo configuration
Reworked go_go_go() function and helpers to handle commands from /dev/servoblaster file and from TCP.
servoctl added