Add donation fragment

OpenKeychain/src/google/AndroidManifest.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
+        package="org.sufficientlysecure.keychain" >
+
+    <uses-permission android:name="com.android.vending.BILLING" />
+
+    <application />
+
+</manifest>