added examples

[jamesthesnake]

Just added the example you had in the README doc to an actual file to help speed things up :)

[codecov]

Codecov Report

Merging #80 (e051f15) into master (e2c6f13) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #80   +/-   ##
=======================================
  Coverage   99.87%   99.87%           
=======================================
  Files          49       49           
  Lines        2409     2409           
=======================================
  Hits         2406     2406           
  Misses          3        3           

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[JeffFessler]

Thanks!
Eventually I hope to have this type of thing using DemoCards.jl but I have been too busy to figure it out.
Help wanted :)