Initial lesson about python string formatting using the format() method
Removed solutions
Clarified the note about field widths and added an example
Clarified the sentence about the print command output
Fixed typos
Changed line width to 80 characters for the poem formatting and added an explanation
Added machine-readable vs human-readable output, and updated the challenges
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
Fixed typo
Novice shell lesson is now written in terms of Nelle instead of Vlad.
added floor division to function that is python 2.x and 3.x compatible