added threemxl_controller to launch file
renamed emergency_scanner to emergency_stop and modified code to work with -inf instead of NaN, because it was unreliable
renamed zuros_threemxlController to zuros_threemxl_controller
renamed laptop_battery to zuros_laptop.py
depth code now checks for values < min_range and outputs -inf if < min_range. Launch file sets parameters of camera
added the same locations and positions as care-o-bot used before
checks for -inf