Reorganized File Structure

Added Documentation

MathKit/MPEvaluationContext.h

@@ -0,0 +1,27 @@
+//
+//  MPEvaluationContext.h
+//  MathPad
+//
+//  Created by Kim Wittenburg on 12.09.14.
+//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
+//
+
+
+
+@class MPEvaluationContext;
+
+
+@interface MPEvaluationContext : NSObject
+
++ (MPEvaluationContext *)sharedContext;
+
+- (void)push;
+- (void)pop;
+
+- (BOOL)defineVariable:(NSString *)variable
+                 value:(NSDecimalNumber *)value;
+- (void)undefineVariable:(NSString *)variable;
+
+- (NSDecimalNumber *)valueForVariable:(NSString *)variable;
+
+@end