message: Updated HackflightSim instructions
diff: @@ -64,16 +64,16 @@ do the following:
  1. Clone this repository (MulticopterSim) into your <b>Documents/Unreal Projects</b> folder, first
  creating that folder if it doesn't exit.
  -2. Clone the [HackflightSim](https://github.com/simondlevy/HackflightSim) repository into
  -the <b>Documents/Unreal Projects/MulticopterSim/Source/MulticopterSim</b> folder.
  -
  -3. Clone the [Hackflight](https://github.com/simondlevy/Hackflight) repository into your
  +2. Clone the [Hackflight](https://github.com/simondlevy/Hackflight) repository into your
  <b>DocumentsArduino/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.)
  +3. Copy the <b>Hackflight/extras/HackflightSim</b> folder into
  +the <b>Documents/Unreal Projects/MulticopterSim/Source/MulticopterSim</b> folder.
  +
  4. Right-click on the <b>MulticopterSim.uproject</b>
  file and select <b>Generate Visual Studio project file</b> to generate a <b>.sln</b> file
  