Allow setting Top/Bottom/Left/Right margins independently in PNBarChart

@@ -46,7 +46,10 @@ typedef NSString *(^PNYLabelFormatter)(CGFloat yLabelValue);
 /** Formats the ylabel text. */
 @property (copy) PNYLabelFormatter yLabelFormatter;
 
-@property (nonatomic) CGFloat chartMargin;
+@property (nonatomic) CGFloat chartMarginLeft;
+@property (nonatomic) CGFloat chartMarginRight;
+@property (nonatomic) CGFloat chartMarginTop;
+@property (nonatomic) CGFloat chartMarginBottom;
 
 /** Controls whether labels should be displayed. */
 @property (nonatomic) BOOL showLabel;

@@ -91,20 +91,33 @@
     }
     else if ([self.title isEqualToString:@"Bar Chart"])
     {
+        static NSNumberFormatter *barChartFormatter;
+        if (!barChartFormatter){
+            barChartFormatter = [[NSNumberFormatter alloc] init];
+            barChartFormatter.numberStyle = NSNumberFormatterCurrencyStyle;
+            barChartFormatter.allowsFloats = NO;
+            barChartFormatter.maximumFractionDigits = 0;
+        }
         self.titleLabel.text = @"Bar Chart";
         
         self.barChart = [[PNBarChart alloc] initWithFrame:CGRectMake(0, 135.0, SCREEN_WIDTH, 200.0)];
 //        self.barChart.showLabel = NO;
         self.barChart.backgroundColor = [UIColor clearColor];
         self.barChart.yLabelFormatter = ^(CGFloat yValue){
-            CGFloat yValueParsed = yValue;
-            NSString * labelText = [NSString stringWithFormat:@"%0.f",yValueParsed];
-            return labelText;
+            return [barChartFormatter stringFromNumber:[NSNumber numberWithFloat:yValue]];
         };
+        self.barChart.yChartLabelWidth = 60.0;
+        self.barChart.chartMarginLeft = 70.0;
+        self.barChart.chartMarginRight = 10.0;
+        self.barChart.chartMarginTop = 5.0;
+        self.barChart.chartMarginBottom = 10.0;
+
+        
         self.barChart.labelMarginTop = 5.0;
         self.barChart.showChartBorder = YES;
         [self.barChart setXLabels:@[@"2",@"3",@"4",@"5",@"2",@"3",@"4",@"5"]];
 //       self.barChart.yLabels = @[@-10,@0,@10];
+//        [self.barChart setYValues:@[@10000.0,@30000.0,@10000.0,@100000.0,@500000.0,@1000000.0,@1150000.0,@2150000.0]];
         [self.barChart setYValues:@[@10.82,@1.88,@6.96,@33.93,@10.82,@1.88,@6.96,@33.93]];
         [self.barChart setStrokeColors:@[PNGreen,PNGreen,PNRed,PNGreen,PNGreen,PNGreen,PNRed,PNGreen]];
         self.barChart.isGradientShow = NO;