update readme

Author: bradlc

packages/tailwindcss-intellisense/README.md

@@ -32,7 +32,23 @@ See the complete CSS for a Tailwind class name by hovering over it.
 
 Provides syntax definitions so that Tailwind features are highlighted correctly.
 
-## Settings
+## Recommended VS Code Settings
+
+VS Code has built-it CSS validation which may display errors when using Tailwind-specific syntax, such as `@apply`. You can disable this with the `css.validate` setting:
+
+```
+"css.validate": false
+```
+
+By default VS Code will not trigger completions when editing "string" content, for example within HTML attribute values. Updating the `editor.quickSuggestions` setting may improve your experience, particularly when editing Tailwind classes in HTML files:
+
+```
+"editor.quickSuggestions": {
+  "strings": true
+}
+```
+
+## Extension Settings
 
 ### `tailwindCSS.includeLanguages`