More enemy balancing

android/AndroidManifest.xml

@@ -1,10 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="io.anuke.mindustry"
-    android:versionCode="23"
-    android:versionName="3.07b" >
+    android:versionCode="24"
+    android:versionName="3.08b" >
 
     <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="25" />
+    <uses-permission android:name="com.android.vending.BILLING" />
 
     <application
         android:allowBackup="true"
@@ -21,6 +22,9 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity android:name=".DonationsActivity" />
+
     </application>
 
 </manifest>