message: Restore Hackflight
diff: @@ -58,9 +58,13 @@ You should first clone the MulticopterSim repository into your <b>Documents/Unre
  that folder if it doesn't already exist.
  Although MulticopterSim is designed to work with any flight-control software
  -you like, the easiest way to get started isp o work with the
  -[Hackflight](https://github.com/simondlevy/Hackflight) software, by switching to
  -[this branch](https://github.com/simondlevy/MulticopterSim/tree/Hackflight) and continuing where you left off.
  +you like, it is set up to work with the
  +[Hackflight](https://github.com/simondlevy/Hackflight) software by default. So to get started, you should
  +clone the [Hackflight](https://github.com/simondlevy/Hackflight) repository into your <b>Arduino/libraries</b>
  +folder, first creating that folder if it doesn't already exist. (You don't need to install Arduino; this is
  +simply where MulticopterSim
  +[looks for](https://github.com/simondlevy/MulticopterSim/blob/master/Source/MulticopterSim/MulticopterSim.Build.cs#L21-L24)
  +the Hackflight software.)
  Now double-click on <b>MulticopterSim.uproject</b> to launch UnrealEditor; then click the Compile icon at the top.
  You can then use your favorite code editor (ours is
  @@ -92,7 +96,7 @@ directive in <b>vision/VisionAlgorithm.h</b>.
  MulticopterSim has a simple API for interfacing with other flight-control software: create a subclass of the
  abstract [SimFlightController](https://github.com/simondlevy/MulticopterSim/blob/master/Source/MulticopterSim/SimFlightController.h#L17-L39)
  class, implementing its virtual ```init``` and ```update``` methods, as well as the ```createSimFlightController``` factory method.
  -Here is an
  -[example](https://github.com/simondlevy/MulticopterSim/blob/master/Source/MulticopterSim/hackflight/SimFlightController.cpp)
  -subclass that uses the [Hackflight](https://github.com/simondlevy/Hackflight) firmware.
  +Here is default the
  +[subclass](https://github.com/simondlevy/MulticopterSim/blob/master/Source/MulticopterSim/hackflight/SimFlightController.cpp)
  +that uses the [Hackflight](https://github.com/simondlevy/Hackflight) firmware.
  