Add example with two constraints

[pkofod]

I think the AV script must be wrong :) It's trying to install "IPNewtons"

[codecov[bot]]

Codecov Report

Merging #5 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master       #5   +/-   ##
=======================================
  Coverage   80.85%   80.85%           
=======================================
  Files           6        6           
  Lines         564      564           
=======================================
  Hits          456      456           
  Misses        108      108

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[pkofod]

lgtm