Added hat switch example

Author: MHeironimus

README.md

@@ -15,7 +15,8 @@ The following example Arduino sketch files are included in this library:
 - JoystickButton - Creates a Joystick and maps pin 9 to button 0, pin 10 to button 1, pin 11 to button 2, and pin 12 to button 3.
 - JoystickKeyboard - Creates a Joystick and a Keyboard. Maps pin 9 to Joystick Button 0, pin 10 to Joystick Button 1, pin 11 to Keyboard key 1, and pin 12 to Keyboard key 2.
 - DrivingControllerTest - Creates a Driving Controller and tests 4 buttons, the Steering, Brake, and Accelerator when pin A0 is grounded.  
-- FlightControllerTest - Creates a Flight Controller and tests 32 buttons, the X and Y axis, the Throttle, and the Rudder when pin A0 is grounded.  
+- FlightControllerTest - Creates a Flight Controller and tests 32 buttons, the X and Y axis, the Throttle, and the Rudder when pin A0 is grounded.
+- HatSwitchTest - Creates a joystick with two hat switches. Grounding pins 4 - 11 cause the hat switches to change position.  
 
 ###Simple example