Merge pull request #23 from bolan9999/develop

readme add video

Author: bolan9999

README-cn.md

@@ -181,3 +181,6 @@ onScroll | ({nativeEvent:{contentOffset:{x:number,y:number}}})=> any |  | 滑动
 ## 目标计划
 1. 修正细节问题
 2. 提供编辑功能
+
+# 性能展示
+查看LargeList的性能表现：[优酷](http://v.youku.com/v_show/id_XMzI0ODc4ODkyOA==.html) 或者 [youtube](https://youtu.be/k95G3_QGYHE)

README.md

@@ -186,4 +186,7 @@ Current section index of LargeList.
 ### headerHeight:number
 Get LargeList's header height
 ### footerHeight:number
-Get LargeList's footer height
+Get LargeList's footer height
+
+# Performance Show
+View the video of react-native-largelist performance on [youtube](https://youtu.be/k95G3_QGYHE) or [youku](http://v.youku.com/v_show/id_XMzI0ODc4ODkyOA==.html)