Making Matt's starry night example "simpler"
updating language
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lessons/setup.html

Got out of sync
playing around with showing the image first. Need to fill in descriptions.
Incorporating Matt's suggested changes
renamed notebook
Merge remote-tracking branch 'upstream/master'

Bringing local repository up to date.
updating the text explanations, trying to come up with questions that don't suck
Merge remote-tracking branch 'upstream/master'

bringing local copy of 'bc' up to date before submitting pull request
minor edits of color reduction routine
added floor division to function that is python 2.x and 3.x compatible
incorporating suggestions by @PBarmby and rerunning entire notebook so cells are numbered better.
Expanding the section on StringIO, will explain function next
Merge pull request #508 from drlabratory/starry-night-lesson

Starry night using ipythonblocks