update README.md

Author: ypresto

README.md

@@ -10,7 +10,7 @@ Hardware accelerated transcoder for Android, written in pure Java.
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
     ParcelFileDescriptor parcelFileDescriptor = resolver.openFileDescriptor(data.getData(), "r");
     FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
-    MediaTranscoder.getInstance().transcodeVideo(fileDescriptor, file.getAbsolutePath(), new MediaTranscoder.Listener() {
+    MediaTranscoder.Listener listener = new MediaTranscoder.Listener() {
         @Override
         public void onTranscodeProgress(double progress) {
             ...
@@ -26,12 +26,30 @@ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         public void onTranscodeFailed(Exception exception) {
             ...
         }
-    }
+    };
+    MediaTranscoder.getInstance().transcodeVideo(fileDescriptor, file.getAbsolutePath(),
+            MediaFormatStrategyPresets.createAndroid720pStrategy(), listener); // or createAndroid720pStrategy([your bit rate here])
 }
 ```
 
 See `TranscoderActivity.java` in example directory for ready-made transcoder app.
 
+## Quick Setup
+
+### Gradle
+
+Available from [JCenter](https://bintray.com/bintray/jcenter), which is default repo of gradle script generated by recent android studio.
+
+```
+repositories {
+   jcenter()
+}
+```
+
+```
+compile 'net.ypresto.androidtranscoder:android-transcoder:0.1.4'
+```
+
 ## License
 
 ```