Changed Android Manager version to 3.0

platforms/android/service/engine/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.opencv.engine"
-    android:versionCode="219@ANDROID_PLATFORM_VERSION_CODE@"
-    android:versionName="2.20" >
+    android:versionCode="300@ANDROID_PLATFORM_VERSION_CODE@"
+    android:versionName="3.00" >
 
     <uses-sdk android:minSdkVersion="@ANDROID_NATIVE_API_LEVEL@" />
     <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>
@@ -27,4 +27,4 @@
         </intent-filter>
     </activity>
     </application>
-</manifest>
\ No newline at end of file
+</manifest>