message: Remove gitter link. Gitter room is removed due a lot of spam and low user activity
diff: <img alt="Closed issues" src="https://img.shields.io/github/issues-closed/surveyjs/surveyjs.svg">
  </a>
  -[![Join the chat at https://gitter.im/andrewtelnov/surveyjs](https://badges.gitter.im/andrewtelnov/surveyjs.svg)](https://gitter.im/andrewtelnov/surveyjs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
  -
  ## Documentation
  [SurveyJS Library Documentation](https://surveyjs.io/Documentation/Library/)
  