Rename 'cycle' -> 'circle'.

Fix spelling of line chart point style enum value. People could
otherwise search for 'circle' and not find anything, because of the
misspelling.

@@ -285,8 +285,8 @@
             int x = 2 * _chartMargin +  (i * offSetX);
             int y = _chartCavanHeight - (innerGrade * _chartCavanHeight) + (_yLabelHeight / 2);
 
-            // cycle style point
-            if (chartData.inflexionPointStyle == PNLineChartPointStyleCycle) {
+            // Circular point
+            if (chartData.inflexionPointStyle == PNLineChartPointStyleCircle) {
 
                 CGRect circleRect = CGRectMake(x - inflexionWidth / 2, y - inflexionWidth / 2, inflexionWidth, inflexionWidth);
                 CGPoint circleCenter = CGPointMake(circleRect.origin.x + (circleRect.size.width / 2), circleRect.origin.y + (circleRect.size.height / 2));
@@ -310,7 +310,7 @@
                 last_x = x;
                 last_y = y;
             }
-            // Square style point
+            // Square point
             else if (chartData.inflexionPointStyle == PNLineChartPointStyleSquare) {
 
                 CGRect squareRect = CGRectMake(x - inflexionWidth / 2, y - inflexionWidth / 2, inflexionWidth, inflexionWidth);
@@ -338,7 +338,7 @@
                 last_x = x;
                 last_y = y;
             }
-            // Triangle style point
+            // Triangular point
             else if (chartData.inflexionPointStyle == PNLineChartPointStyleTriangle) {
 
                 if ( i != 0 ) {

@@ -11,7 +11,7 @@
 typedef NS_ENUM(NSUInteger, PNLineChartPointStyle) {
     
     PNLineChartPointStyleNone = 0,
-    PNLineChartPointStyleCycle,
+    PNLineChartPointStyleCircle,
     PNLineChartPointStyleTriangle,
     PNLineChartPointStyleSquare
 };
@@ -29,9 +29,8 @@ typedef PNLineChartDataItem *(^LCLineChartDataGetter)(NSUInteger item);
 @property (nonatomic, assign) PNLineChartPointStyle inflexionPointStyle;
 
 /**
- *  if PNLineChartPointStyle is cycle, inflexionPointWidth equal cycle's diameter
- *  if PNLineChartPointStyle is square, that means the foundation is square with
- *  inflexionPointWidth long
+ * If PNLineChartPointStyle is circle, this returns the circle's diameter.
+ * If PNLineChartPointStyle is square, each point is a square with each side equal in length to this value.
  */
 @property (nonatomic, assign) CGFloat inflexionPointWidth;
 

@@ -68,7 +68,7 @@
         PNLineChartData *data01 = [PNLineChartData new];
         data01.color = PNFreshGreen;
         data01.itemCount = lineChart.xLabels.count;
-        data01.inflexionPointStyle = PNLineChartPointStyleCycle;
+        data01.inflexionPointStyle = PNLineChartPointStyleCircle;
         data01.getData = ^(NSUInteger index) {
             CGFloat yValue = [data01Array[index] floatValue];
             return [PNLineChartDataItem dataItemWithY:yValue];