第三步加入互动验钞
备份第三个场景名为003_03
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Assets/Scenes/003.unity
	Assets/Skins/SFS/skin.guiskin
	ProjectSettings/ProjectSettings.asset
增加暂停功能
1、Merge remote-tracking branch 'upstream/master'
2、合入拖钞票
3、合入暂停