Updated Rectangle points.

Updated some of the Rectangle points to work correctly.

Added rspec support methods for easily changing the Plane coordinate system.

Updated the README.md to include examples of the philosophy behind the library.
Added dimensionality.

Specific models now inherit from a dimensionality. These dimensionalities include:

  ZeroDimensional
  OneDimensional
  TwoDimensional
  ThreeDimensional

 Dimensionality is meant to confer specific methods that only make sense in the context of certain objects.

 For example with circles or rectangles, the TwoDimensional parent class will confer translational sugar methods such as:
 up, down, right, left, forward, and backward. These methods manipulate the TwoDimensional child instances anchor.
Finished the Point translation specs.

The Point class translation sugar specs are complete.