Update the README file and remove examples

[MaryamZi]

Examples were moved to ballerina/np

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.77%. Comparing base (d949ff8) to head (834ab1d).
Report is 2 commits behind head on main.

❌ Your project status has failed because the head coverage (77.77%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #55   +/-   ##
=======================================
  Coverage   77.77%   77.77%           
=======================================
  Files           4        4           
  Lines         153      153           
  Branches       41       41           
=======================================
  Hits          119      119           
  Misses         34       34           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.