Fix minor typos#1

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jackbenn wants to merge 3 commits intoGalvanizeOpenSource:masterfrom

jackbenn:master

Commits on Dec 5, 2017

fix typos
jackbenn
committed

Commits on Dec 13, 2017

update data for class 5, python 3, minor typos
jackbenn
committed

Commits on Jan 26, 2018

fix minor typos and error
jackbenn
committed