Update supported devices documentation

Added the handbrake, simplified this list, and added generic devices to the main README.

Author: dmadison

README.md

@@ -14,8 +14,15 @@ Run one of the library examples in the Arduino IDE by going to `File -> Examples
 
 ## Supported Devices
 
-* [Logitech Three Pedal Peripheral (Gas, Brake, Clutch)](http://dmadison.github.io/Sim-Racing-Arduino/docs/logitech_pedals.html)
+### Generic Devices
+* [Two pedal peripherals (gas + brake)](https://dmadison.github.io/Sim-Racing-Arduino/docs/class_sim_racing_1_1_two_pedals.html)
+* [Three pedal peripherals (gas, brake, clutch)](https://dmadison.github.io/Sim-Racing-Arduino/docs/class_sim_racing_1_1_three_pedals.html)
+* [Analog shifters](https://dmadison.github.io/Sim-Racing-Arduino/docs/class_sim_racing_1_1_analog_shifter.html)
+* [Analog handbrakes](https://dmadison.github.io/Sim-Racing-Arduino/docs/class_sim_racing_1_1_handbrake.html)
+
+### Commercial Devices
 * [Logitech Two Pedal Peripheral (Gas, Brake)](http://dmadison.github.io/Sim-Racing-Arduino/docs/logitech_pedals.html)
+* [Logitech Three Pedal Peripheral (Gas, Brake, Clutch)](http://dmadison.github.io/Sim-Racing-Arduino/docs/logitech_pedals.html)
 * [Logitech Driving Force Shifter](http://dmadison.github.io/Sim-Racing-Arduino/docs/logitech_shifter.html)
 
 ## License

docs/pages/supported_devices.md

@@ -1,19 +1,13 @@
 # Supported Devices
 
-### Commercial Devices:
-
-- @subpage logitech_pedals
-- @subpage logitech_shifter
-
 ### Generic Devices
 
-#### Pedals
+* Two pedal peripherals (gas + brake) using `SimRacing::TwoPedals`
+* Three pedal peripherals (gas, brake, clutch) using `SimRacing::ThreePedals`
+* Analog shifters using `SimRacing::AnalogShifter`
+* Analog handbrakes using `SimRacing::Handbrake`
 
-The library supports generic pedal devices that connect via the microcontroller's analog to digital converter (ADC).
+### Commercial Devices
 
-* Two pedal setups (gas + brake) use the `SimRacing::TwoPedals` class.
-* Three pedal setups (gas, brake, clutch) use the `SimRacing::ThreePedals` class.
-
-#### Shifters
-
-The library supports generic shifting devices that record gear position using a pair of potentiometers. These are supported as part of the `SimRacing::AnalogShifter` class.
+- @subpage logitech_pedals
+- @subpage logitech_shifter