Update README.md

Author: ericelliott

README.md

@@ -8,3 +8,10 @@ A list of open source projects that students can contribute to for student proje
 ### [Update ESLint](https://github.com/ericelliott/react-pure-component-starter/issues/196) #easy
 
 ESLint has deprecated some old rules. Bring the `.eslintrc` up to date with the current rule names. Run `npm run lint` to spot failures, and correct the error messages.
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+## rtype
+
+### [Runtime rtype parser](https://github.com/ericelliott/rtype/issues/62) #advanced
+
+Write a function that takes an rtype interface description as a string and returns an object that can be used for runtime introspection and type checking.