Jump changes and motion blur uses velocity.magnitude
Fixed some stuff and added some comments
Merge branch 'master' of https://github.com/Raful/Hoverboard into Andreas

Conflicts:
	Hoverboard/Assets/Prefabs/Character/Hoverboard 4.0.prefab
	Hoverboard/Assets/Script/Character/DetectState/GrindKeyState.cs
	Hoverboard/Assets/Script/Character/HoverBoard/Movement.cs