Update README.md

Author: mlynch

README.md

@@ -48,6 +48,10 @@ To enable Livereload and Instant Refresh during development (when running `npm r
 
 Note: this configuration wil be easier in Capacitor 3 which [recently went into beta](https://capacitorjs.com/blog/announcing-capacitor-3-0-beta).
 
+## API Routes
+
+API Routes can be used but some minimal configuration is required. See [this discussion](https://github.com/mlynch/nextjs-tailwind-ionic-capacitor-starter/issues/4#issuecomment-754030049) for more information.
+
 ## Caveats
 
 One caveat with this project: Because the app must be able to run purely client-side and use [Next.js's Export command](https://nextjs.org/docs/advanced-features/static-html-export), that means no Server Side Rendering in this code base. There is likely a way to SSR and a fully static Next.js app in tandem but it requires [a Babel plugin](https://github.com/erzr/next-babel-conditional-ssg-ssr) or would involve a more elaborate monorepo setup with code sharing that is out of scope for this project.