Added Lots of Documentation

Added some nice to haves
Improved and Unified General Code Layout

MathKit/MPFractionFunctionLayout.m

@@ -10,6 +10,7 @@
 
 #import "MPFractionFunction.h"
 
+
 #define kFractionFunctionLineWidth 1.0
 #define kFractionFunctionHorizontalInset 2.0
 #define kFractionFunctionNominatorOffset 0
@@ -17,6 +18,8 @@
 
 #define MPFractionMiddle (CTFontGetCapHeight((CTFontRef)self.font) / 2)
 
+
+
 @implementation MPFractionFunctionLayout
 
 - (MPFractionFunction *)fractionFunction
@@ -24,21 +27,25 @@
     return (MPFractionFunction *)self.function;
 }
 
+
 - (NSUInteger)indexOfChildBelowChildAtIndex:(NSUInteger)index
 {
     return 1;
 }
 
+
 - (NSUInteger)indexOfChildAboveChildAtIndex:(NSUInteger)index
 {
     return 0;
 }
 
+
 - (NSIndexSet *)indexesOfRemainingChildren
 {
     return [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, 2)];
 }
 
+
 - (NSPoint)offsetOfChildLayoutAtIndex:(NSUInteger)index
 {
     NSRect bounds = self.bounds;
@@ -54,11 +61,13 @@
     }
 }
 
+
 - (BOOL)childAtIndexUsesSmallSize:(NSUInteger)index
 {
     return YES;
 }
 
+
 - (NSIndexPath *)indexPathForLocalMousePoint:(NSPoint)point
 {
     if (point.x < self.bounds.size.width / 2) {
@@ -68,6 +77,7 @@
     }
 }
 
+
 - (NSRect)generateBounds
 {
     NSRect nominatorBounds = [self childLayoutAtIndex:0].bounds;
@@ -80,6 +90,7 @@
     return bounds;
 }
 
+
 - (void)draw
 {
     CGFloat y = MPFractionMiddle - kFractionFunctionLineWidth / 2;