1. 未完成版本
2. 改了Animation可以直接使用Node
3. FlingView的PrivateInstance不使用static 避免同一頁面多個FlingView Instance
Merge branch 'master' of https://github.com/gradyzhuo/gzflingview into branch

Conflicts:
	Classes/GZFlingView.swift
	Classes/GZFlingViewAnimation.swift
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Merge branch 'master' of https://github.com/gradyzhuo/gzflingview into branch

Conflicts:
	Classes/GZFlingView.swift
Merge branch 'branch' of https://github.com/gradyzhuo/GZFlingView into branch
1. 修改Queue結構
2. 將Queue分成兩個
-> reuseQueuePool 是 做為Reuse Pool使用
-> Visible Queue 是 真正操作的Node
滑掉的Node會push回reuseQueuePool
同理 重新prepare的 Node 從  reuseQueuePool pop
讓reuseQueuePool像是個池子
1. Change the rule of appear of FlingView.
2. Combine three file to GZFlingView.swift
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fix a bug of notify delegate that is arriving end index.
1. Auto-completion lack of visible parts.
1. remove datasource method - 'numberOfCarryingViewsForReusingInFlingView', from animation.expectMinSize instead.
fix bug.
1. Remove non-used code
2. move some private property to Private Struct
Merge branch 'branch'

Conflicts:
	Classes/GZFlingView.swift