Merge pull request #13 from mg6maciej/fix/initialization_called_multiple_times

Call startDemo() only once.

Author: broady

demo/src/com/google/maps/android/utils/demo/BaseDemoActivity.java

@@ -23,16 +23,16 @@ public void onCreate(Bundle savedInstanceState) {
     protected void onResume() {
         super.onResume();
         setUpMapIfNeeded();
-        if (getMap() != null) {
-          startDemo();
-        }
     }
 
     private void setUpMapIfNeeded() {
         if (mMap != null) {
             return;
         }
         mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
+        if (mMap != null) {
+            startDemo();
+        }
     }
 
     /**