Changed sp_viewer.py to disable dithering when images are converted
from grayscale to black and white.

Changed exampleView.py to save a screenshot of the results.
Changed sp_viewer.py to disable dithering when converting images
from grayscale to black and white.

Changed exampleView.py to save a screenshot of the results.
Merge pull request #1 from baroobob/master

Disable dithering