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README.md

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-#EasyPlayer
-A tiny weight player base on [FFmpeg](http://ffmpeg.org/) for Android.
+## Summary
+EasyPlayer is a tiny player base on [FFmpeg](http://ffmpeg.org/) for Android, Aim to demonstrate how to decode av stream and render on an Android phone.
+We try to keep the code simple, and interface of the player is nearly the same as Android's MediaPlayer.
+
+## main technique
+- FFmpeg decode
+- opensles render audio on native level
+- native window render video on native level
 
-##usage
-Put your video file under root of your Android phone and just start EasyPlayer.