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]

Codecov Report

Merging #116 (da3d794) into master (7dde7f3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #116   +/-   ##
=======================================
  Coverage   34.83%   34.83%           
=======================================
  Files          13       13           
  Lines         333      333           
  Branches       31       31           
=======================================
  Hits          116      116           
  Misses        216      216           
  Partials        1        1           

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