app center；增加發送ping的秒

Assets/Plugins/Android/AndroidManifest.xml

@@ -4,7 +4,7 @@
 		<package android:name="com.tencent.mm" />
 		<package android:name="com.zhixingpai.powerfun" />
 	</queries>
-	<application android:requestLegacyExternalStorage="true">
+	<application android:requestLegacyExternalStorage="true" >
 		<activity android:name="com.unityplugins.imageselector.TestMainActivity"
 				  android:theme="@style/UnityThemeSelector"
 				  android:screenOrientation="landscape"