Add SourceLevel to General Purpose section

README.md

@@ -34,7 +34,7 @@ Sponsored by [GolangCI](https://golangci.com): SaaS service for running linters
 * [QuantifiedCode](https://www.quantifiedcode.com/) - Automated code review & repair
 * [Scrutinizer](https://scrutinizer-ci.com/) - A proprietery code quality checker that can be integrated with GitHub
 * [SideCI](https://sideci.com/) - An automated code reviewing tool. Improving developers' productivity.
-
+* [SourceLevel](https://sourcelevel.io/) - Automated Code Review and Pull Request Metrics
 
 ## Linters
 ### Code Formatting