added support for metadata and tagging files

[stevestencil]

No description provided.

[codecov]

Codecov Report

Merging #83 into master will increase coverage by 0.34%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #83      +/-   ##
==========================================
+ Coverage   94.54%   94.88%   +0.34%     
==========================================
  Files           2        2              
  Lines         165      176      +11     
  Branches       34       37       +3     
==========================================
+ Hits          156      167      +11     
  Misses          9        9

Impacted Files	Coverage Δ
index.js	94.05% <100%> (+0.72%)	⬆️

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[natanrolnik]

@stevestencil this looks interesting!
I looked at the tests, but didn't understand so much how it would work. Would you mind adding to the ReadMe a section about tagging/metadata and how to add them through the API?

[davimacedo]

Great job! LGTM!

[davimacedo]

@stevestencil can you please add some docs like @natanrolnik suggested? Maybe in the notes and/or guide?

[stevestencil]

Sure thing!