docs: Link to OSS fellowship medium post in README (#4821)

Robert Fink · adidahiya · commit c5074f46f5ed · 2019-08-02T09:49:47.000-04:00
diff --git a/README.md b/README.md
@@ -9,7 +9,7 @@
 
 TSLint is an extensible static analysis tool that checks [TypeScript](https://github.com/Microsoft/TypeScript) code for readability, maintainability, and functionality errors. It is widely supported across modern editors & build systems and can be customized with your own lint rules, configurations, and formatters.
 
-:warning: __TSLint will be deprecated some time in 2019__. See this issue for more details: [Roadmap: TSLint &rarr; ESLint](https://github.com/palantir/tslint/issues/4534).
+:warning: __TSLint will be deprecated some time in 2019__. See this issue for more details: [Roadmap: TSLint &rarr; ESLint](https://github.com/palantir/tslint/issues/4534). If you're interested in helping with the TSLint/ESLint migration, please check out our [OSS Fellowship](https://medium.com/palantir/fellowships-for-open-source-developers-3892e6b75ee1) program.
 
 TSLint currently supports:
 
