Update demo notebooks

[rdeits]

Builds upon #18

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@e9ce2ed). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #19   +/-   ##
=========================================
  Coverage          ?   70.52%           
=========================================
  Files             ?        4           
  Lines             ?       95           
  Branches          ?        0           
=========================================
  Hits              ?       67           
  Misses            ?       28           
  Partials          ?        0

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