fixed double-tap zoom scale limit bug

was capping double-tap destination scale at 1.0; this patch correctly
sets the cap at maxScale

src/com/qozix/layouts/ZoomPanLayout.java

@@ -778,7 +778,7 @@ public boolean onTouchEvent( MotionEvent event ) {
 			if ( determineIfQualifiedDoubleTap() ) {
 				saveHistoricalScale();
 				saveDoubleTapHistory();
-				double destination = Math.min( 1, scale * 2 );
+				double destination = Math.min( maxScale, scale * 2 );
 				smoothScaleTo( destination, ZOOM_ANIMATION_DURATION ); 
 				for ( GestureListener listener : gestureListeners ) {
 					listener.onDoubleTap( actualPoint );