Update README.md

docs: add IDX button

README.md

@@ -10,6 +10,21 @@
 
 A simple device name lookup package. Map e.g. 'iPhone13,4' to 'iPhone 12 Pro Max' or 'SM-G980F' to 'Galaxy S20'. No internet connection or database required.
 
+<a href="https://idx.google.com/import?url=https://github.com/Boehrsi/device_marketing_names">
+  <picture>
+    <source
+      media="(prefers-color-scheme: dark)"
+      srcset="https://cdn.idx.dev/btn/open_dark_32.svg">
+    <source
+      media="(prefers-color-scheme: light)"
+      srcset="https://cdn.idx.dev/btn/open_light_32.svg">
+    <img
+      height="32"
+      alt="Open in IDX"
+      src="https://cdn.idx.dev/btn/open_purple_32.svg">
+  </picture>
+</a>
+
 ## Features
 
 - Lookup Android marketing names