修改listview
Merge branch 'master' of https://github.com/openwayne/libgdx-ui
Merge branch 'master' of https://github.com/openwayne/libgdx-ui

Conflicts:
	cocostudio-ui-libgdx/src/org/freyja/libgdx/cocostudio/ui/widget/ListView.java
增加获取按钮文本方法
Merge remote-tracking branch '王兵/master'
image设置文字的时候不居中的问题
Merge pull request #7 from Z-starts/master

advanceImgButton 提供获取文本方法