Remove some superfluous comments.

Also, remove a few lines of crufty code.

@@ -16,7 +16,6 @@
     self = [super initWithFrame:frame];
 
     if (self) {
-        // Initialization code
         _chartLine              = [CAShapeLayer layer];
         _chartLine.lineCap      = kCALineCapButt;
         _chartLine.fillColor    = [[UIColor whiteColor] CGColor];
@@ -72,7 +71,6 @@
         CAShapeLayer *gradientMask = [CAShapeLayer layer];
         gradientMask.fillColor = [[UIColor clearColor] CGColor];
         gradientMask.strokeColor = [[UIColor blackColor] CGColor];
-        //gradientMask.lineWidth = 4;
         gradientMask.lineWidth    = self.frame.size.width;
         gradientMask.frame = CGRectMake(0, 0, self.bounds.size.width, self.bounds.size.height);
         gradientMask.path = progressline.CGPath;
@@ -123,7 +121,6 @@
 // An empty implementation adversely affects performance during animation.
 - (void)drawRect:(CGRect)rect
 {
-    //Draw BG
     CGContextRef context = UIGraphicsGetCurrentContext();
 
     CGContextSetFillColorWithColor(context, self.backgroundColor.CGColor);

@@ -26,7 +26,6 @@
     self = [super initWithFrame:frame];
 
     if (self) {
-        // Initialization code
         self.backgroundColor = [UIColor whiteColor];
         self.clipsToBounds   = YES;
         _showLabel           = YES;

@@ -16,9 +16,7 @@
 
     UIGraphicsBeginImageContext(rect.size);
     CGContextRef context = UIGraphicsGetCurrentContext();
-    CGContextSetFillColorWithColor(context,
-                                   [color CGColor]);
-    //  [[UIColor colorWithRed:222./255 green:227./255 blue: 229./255 alpha:1] CGColor]) ;
+    CGContextSetFillColorWithColor(context, [color CGColor]);
     CGContextFillRect(context, rect);
     UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
     UIGraphicsEndImageContext();

@@ -12,9 +12,6 @@
 #import "PNLineChartData.h"
 #import "PNLineChartDataItem.h"
 
-// ------------------------------------------------------------------------------------------------
-// private interface declaration
-// ------------------------------------------------------------------------------------------------
 @interface PNLineChart ()
 
 @property (nonatomic) NSMutableArray *chartLineArray;  // Array[CAShapeLayer]
@@ -27,9 +24,6 @@
 
 @end
 
-// ------------------------------------------------------------------------------------------------
-// public interface implementation
-// ------------------------------------------------------------------------------------------------
 @implementation PNLineChart
 
 #pragma mark initialization
@@ -379,9 +373,6 @@
             [pointLayer addAnimation:pathAnimation forKey:@"strokeEndAnimation"];
         }
 
-        [CATransaction setCompletionBlock:^{
-             // pointLayer.strokeEnd = 1.0f; // stroken point when animation end
-         }];
         [CATransaction commit];
 
         UIGraphicsEndImageContext();

@@ -5,21 +5,14 @@
 
 #import "PNLineChartDataItem.h"
 
-
-//------------------------------------------------------------------------------------------------
-// private interface declaration
-//------------------------------------------------------------------------------------------------
 @interface PNLineChartDataItem ()
+
 - (id)initWithY:(CGFloat)y;
 
 @property (readwrite) CGFloat y; // should be within the y range
-@end
-
 
+@end
 
-//------------------------------------------------------------------------------------------------
-// public interface implementation
-//------------------------------------------------------------------------------------------------
 @implementation PNLineChartDataItem
 
 + (PNLineChartDataItem *)dataItemWithY:(CGFloat)y
@@ -27,7 +20,6 @@
     return [[PNLineChartDataItem alloc] initWithY:y];
 }
 
-
 - (id)initWithY:(CGFloat)y
 {
     if ((self = [super init])) {
@@ -37,5 +29,4 @@
     return self;
 }
 
-
 @end