fix updater versionstring

forge-gui-mobile-dev/src/forge/app/Main.java

@@ -2,6 +2,7 @@ package forge.app;
 
 import com.badlogic.gdx.Gdx;
 import forge.interfaces.IDeviceAdapter;
+import forge.util.BuildInfo;
 import forge.util.FileUtil;
 import forge.util.JVMOptions;
 import forge.util.OperatingSystem;
@@ -65,6 +66,11 @@ public class Main {
             return System.getProperty("user.home") + "/Downloads/";
         }
 
+        @Override
+        public String getVersionString() {
+            return BuildInfo.getVersionString();
+        }
+
         @Override
         public boolean openFile(String filename) {
             try {