fixed battery charger.

started to program a pathfing algorithm.
ping sensors report distances in inches from left and right. so i was attempting to program if it recieves a signal closer to the left side the car would move right. if the car recieved s signal closer on the right side it would move left. 

need to figure out how to change speed, because its picks up speed fast.  front left sensor need to be screw back on. fell off when test code.