message: Change RotateCmd "Speeds" to "Rotations"
  Since VibrateCmd has Speeds but RotateCmd adds Clockwise to the field,
  change the name since they have different shapes.
  Fixes
diff: @@ -254,7 +254,7 @@ In order to abstract the dynamic range of different toys, the values are sent as
  * _Id_ \(unsigned int\): Message Id
  * _DeviceIndex_ \(unsigned int\): Index of device
  -* _Speeds_ \(array\): Rotation speeds
  +* _Rotations_ \(array\): Rotation speeds
  * _Index_ \(unsigned int\): Index of rotation motor
  * _Speed_ \(double\): Rotation speed with a range of \[0.0-1.0\]
  * _Clockwise_ \(boolean\): Direction of rotation \(clockwise may be subjective\)
  @@ -272,7 +272,7 @@ In order to abstract the dynamic range of different toys, the values are sent as
  "RotationCmd": {
  "Id": 1,
  "DeviceIndex": 0,
  - "Speeds": [
  + "Rotations": [
  {
  "Index": 0,
  "Speed": 0.5,
  