Unable to install robotframework metrics

Unable to install robotframework-metrics, try this

1. Go to robotframework-metrics repository link (https://github.com/adiralashiva8/robotframework-metrics)
2. Click on Clone or download button
3. Unzip downloaded file
4. Open setup.py file (edit mode)
5. Remove gevent ('gevent') and save file
6. Open command prompt in robotframework-metrics (root)
7. Execute following command to install (python setup.py install)

Above actions will install robotframework-metrics