readme: update with some links

kahkeng · kahkeng · commit 2d7c9f9bed35 · 2020-07-27T16:23:36.000-07:00
diff --git a/README.md b/README.md
@@ -3,8 +3,9 @@ TodoMVC using React/Relay/Typescript frontend, Flask/Graphene/SQLAlchemy backend
 
 ## Prerequisites
 
-* Python3
-* Yarn
+* [Python3](https://www.python.org)
+* [NodeJS](https://nodejs.org)
+* [Yarn](https://yarnpkg.com)
 
 ## Installation
 
