Add velocity stat
Merge remote-tracking branch 'origin/JuHyeng'

Conflicts:
	Assets/scene/inGame.unity
	Assets/script/SpriteControl.cs
	Falling-csharp.sln
	Falling.sln
	Library/CurrentLayout.dwlt
	Library/CurrentMaximizeLayout.dwlt
	Library/ScriptAssemblies/Assembly-CSharp.dll
	Library/ScriptAssemblies/Assembly-CSharp.dll.mdb
	Library/assetDatabase3
	Library/expandedItems
	Library/guidmapper
	Library/metadata/21/2145d07e8c5614e30aec618ad930c4bc
	Library/metadata/b8/b804c559cb5fe464d85f2862d1b82187