<commit_before># HBExpandButton
This is a library which provides a button that can pop-up and shrink more another small button.
## 简介
一个可以沿扇形弹出、收缩若干子按钮的按钮。

## Manual
HBExpandButton: Setting style and size just like using the UIButton.
HBExpandButton.subBtnArray: Setting shape, and round by default.<commit_msg>Modify README<commit_after># HBExpandButton
This is a library which provides a button that can pop-up and shrink more another small button.

## Manual
HBExpandButton: Setting style and size just like using the UIButton.
HBExpandButton.subBtnArray: Setting shape, and round by default.
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