date update.

Update simpleHilbertCurve.py

cleaning up line wrapping

improvements to help message

improving the help message.

cleaning up help message

correcting typo

added support for pcolor() matrix drawing, made it the default. added an option to use matshow() instead. updated readme to reflect all of this.

added support for switching colormaps, added an example in the readme.

updating readme to remove --max and add the new generic example curve

removing the --max option since it is no longer needed, adding a final generic curve example.

fixing formatting

adding examples and example images

adding some images for the readme.md

initial checkin