Add public BOOL property for sector highlight on touch (pie chart)

@@ -38,6 +38,9 @@
 /** Show absolute values not relative i.e. percentages */
 @property (nonatomic) BOOL showAbsoluteValues;
 
+/** Default YES. */
+@property (nonatomic) BOOL shouldHighlightSectorOnTouch;
+
 @property (nonatomic, weak) id<PNChartDelegate> delegate;
 
 - (void)strokeChart;

@@ -56,6 +56,7 @@
         _descriptionTextShadowColor  = [[UIColor blackColor] colorWithAlphaComponent:0.4];
         _descriptionTextShadowOffset =  CGSizeMake(0, 1);
         _duration = 1.0;
+        _shouldHighlightSectorOnTouch = YES;
         
         [super setupDefaultValues];
         [self loadDefault];
@@ -277,9 +278,12 @@
         [self.delegate userClickedOnPieIndexItem:index];
     }
     
+    if (self.shouldHighlightSectorOnTouch) {
+        
         if (self.sectorHighlight) {
             [self.sectorHighlight removeFromSuperlayer];
         }
+        
         PNPieChartDataItem *currentItem = [self dataItemForIndex:index];
         
         CGFloat red,green,blue,alpha;
@@ -297,6 +301,7 @@
                                               startPercentage:startPercnetage
                                                 endPercentage:endPercentage];
         [_contentView.layer addSublayer:self.sectorHighlight];
+    }
 }
 
 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event