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

@@            Coverage Diff            @@
##             master       #1   +/-   ##
=========================================
  Coverage     87.74%   87.74%           
  Complexity      217      217           
=========================================
  Files            11       11           
  Lines           563      563           
  Branches         64       64           
=========================================
  Hits            494      494           
  Misses           44       44           
  Partials         25       25

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