docs: tip for initial setup issues (#191)

Author: flipperlite

README.md

@@ -29,14 +29,15 @@ Generate a `tailwind.config.js` with
 npx tailwindcss init
 ```
 
-Adjust `content`, `darkMode`, `corePlugins` plus any other settings you need, here are the values we recommend: 
+When the [NativeScript CLI](https://github.com/NativeScript/nativescript-cli) creates a new project, it may put code into a `src` folder instead of the  `app` referenced below. Adjust `content`, `darkMode`, `corePlugins` plus any other settings you need. Here are the values we recommend. If you're struggling to get Tailwind working for the first time, check the `content` setting.
 
 ```js
 // tailwind.config.js
 const plugin = require('tailwindcss/plugin');
 
 /** @type {import('tailwindcss').Config} */
 module.exports = {
+  // check this setting first for initial setup issues
   content: [
     './app/**/*.{css,xml,html,vue,svelte,ts,tsx}'
   ],