demo: add test example

ijkmediademo/src/tv/danmaku/ijk/media/demo/VideoPlayerActivity.java

@@ -44,6 +44,7 @@ public class VideoPlayerActivity extends Activity {
     mVideoPath = "http://gslb.coop.letv.com/movie/A51456D18B8BB6865ADBA0EE972B0B7F-situoke.mp4?tag=ios";
     mVideoPath = "http://gslb.bestvcdn.com/gslb/url/Bestv/live/live/kknews/workflow1.m3u8";        
     mVideoPath = "http://gslb.tv.sohu.com/live?cid=12&type=hls";
+    mVideoPath = "http://meta.video.qiyi.com/380/56070c92f215c514e17fd04b07e22e27.m3u8";
      */
 
     @Override
@@ -51,6 +52,8 @@ public class VideoPlayerActivity extends Activity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_player);
 
+        mVideoPath = "http://meta.video.qiyi.com/380/56070c92f215c514e17fd04b07e22e27.m3u8";
+
         Intent intent = getIntent();
         String intentAction = intent.getAction();
         if (!TextUtils.isEmpty(intentAction)