Add license scan report and status

[fossabot]

Your FOSSA integration was successful! Attached in this PR is a badge and license report to track scan status in your README.

Below are docs for integrating FOSSA license checks into your CI:

• CircleCI
• TravisCI
• Jenkins
• Other

[fossabot]

Your license scan is passing -- congrats!

Your badge status is now updated and ready to merge:

[codecov-io]

Codecov Report

Merging #1 into master will increase coverage by 0.81%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master       #1      +/-   ##
==========================================
+ Coverage   98.37%   99.18%   +0.81%     
==========================================
  Files           1        1              
  Lines         123      123              
==========================================
+ Hits          121      122       +1     
+ Misses          2        1       -1

Impacted Files	Coverage Δ
index.js	99.18% <0%> (+0.81%)	⬆️

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