Corrections to the vectorization lab.
Merge branch 'master' into vector
Applied most of Ryan's suggestions to the vectorization edits.
Removed the section on numpy.where from the vectorization lab.
Merge branch 'master' into vector
Merge pull request #174 from insertinterestingnamehere/vector

Vectorization edits
Merge pull request #175 from byuimpact/develop

update from develop