Clarify license

[oxr463]

No description provided.

[codecov-io]

Codecov Report

Merging #25 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #25   +/-   ##
=======================================
  Coverage   86.45%   86.45%           
=======================================
  Files           2        2           
  Lines          96       96           
=======================================
  Hits           83       83           
  Misses         13       13           

Flag	Coverage Δ
#unittests	86.45% <ø> (ø)

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[timvink]

Thanks!