Update README.md

[manishsat]

Added badge

Description of changes

(Give an overview. Add a technical description describing your changes.)

Pull request checklist

• Addresses an existing issue: Fixes #0000
• Added relevant unit test for your changes. (yarn test)
• Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• Ran precheckin (yarn precheckin)

[codecov-io]

Codecov Report

Merging #29 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #29   +/-   ##
=======================================
  Coverage   85.96%   85.96%           
=======================================
  Files          17       17           
  Lines         342      342           
  Branches       17       17           
=======================================
  Hits          294      294           
  Misses         48       48

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[AhmedAbdoOrtiga]

Just fix the build, need to run: "yarn format"