basic example of approbation test

[tyrcho]

[codecov-commenter]

Codecov Report

Merging #59 into master will not change coverage. The diff coverage is n/a.

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##           master      #59   +/-   ##
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  Coverage   80.00%   80.00%           
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  Files           6        6           
  Lines         105      105           
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  Hits           84       84           
  Misses         21       21           

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[tyrcho]

@travisbrown I think this will require a small change in my approval library so you can access easily the approved file, I'll try to publish this soon.

[tyrcho]

@travisbrown I finished the example to show you how approvals-scala can be used. I'm not strong enough with circe to go further, but I think you get the idea. What do you think ?

[travisbrown]

@tyrcho Thanks! I'll take a closer look tomorrow.