refactored formatting, before replaceing Point2D
removed Point2D
moved Vector2D out from the Delaunay.pde
renamed Circumcircle related variables/methods
factored out into GeometricOperations.pde
corrected scopes
factored out to DelaunayTriangulation.pde
adjusted scope
corrected filename
replaced arrays to ArrayList
completely replaced arrays with ArrayLists
Merge pull request #10 from whyi/refactoring

Refactoring