Fixed python3-compatibility. Added a pascal-sierpinski fractal.
Cleanup and updated the readme.
Works in 2.7 (but not 3.X). The only problem is Tkinter
Space is now pause. Vastly improved the color chooser. Added exit button. Escape also exits a fractal.
Changed window size on the pascal-sierpinski fractal.
Added a simulation of Buffons needle to compute pi.
updated readme
Merge pull request #1 from johanasplund/master

Added a pascal-sierpinski fractal.