Add feature in manifest

Signed-off-by: Leo Ma <begeekmyfriend@gmail.com>

app/src/main/AndroidManifest.xml

@@ -5,6 +5,10 @@
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
+    <uses-feature android:name="android.hardware.camera.autofocus" />
+    <uses-feature android:glEsVerstion="0x00020000" android:required="true" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"