Reorganized File Structure

Added Documentation

MathKit/MPPowerFunction.m

@@ -0,0 +1,27 @@
+//
+//  MPPowerFunction.m
+//  MathPad
+//
+//  Created by Kim Wittenburg on 30.09.14.
+//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
+//
+
+#import "MPPowerFunction.h"
+
+#import "MPExpression.h"
+
+@implementation MPPowerFunction
+
+MPFunctionAccessorImplementation(ExponentExpression, _exponentExpression)
+
+- (NSArray *)childrenAccessors
+{
+    return @[@"exponentExpression"];
+}
+
+- (NSString *)description
+{
+    return [NSString stringWithFormat:@"^%@", self.exponentExpression.description];
+}
+
+@end