Added Lots of Documentation

Added some nice to haves
Improved and Unified General Code Layout

MathKit/MPTerm.h

@@ -9,6 +9,8 @@
 
 /*!
  @header
+ This file contains the <code>MPTerm</code> class.
+ 
  The <code>MPTerm</code> class is used to evaluate a mathematical expression. A
  term is a purely mathematical representation of a part of an expression. A term
  can be defined with three rules:
@@ -66,6 +68,7 @@
 #define ReturnNilIfNil(test) if (test == nil) return nil
 
 
+
 @class MPTerm;