Update README.md

Author: typicode

README.md

@@ -102,8 +102,6 @@ Also when doing requests, it's good to know that:
 $ npm install -g json-server
 ```
 
-Requires Node 4+
-
 ## Routes
 
 Based on the previous `db.json` file, here are all the default routes. You can also add [other routes](#add-custom-routes) using `--routes`.