Update Inky Frame readme

micropython/examples/inky_frame/README.md

@@ -2,7 +2,9 @@
 
 - [PicoGraphics](#picographics)
 - [Examples](#examples)
+  - [Button Test](#button-test)
   - [Daily Activity](#daily-activity)
+  - [Image Gallery](#image-gallery)
   - [News](#news)
   - [PlaceKitten](#placekitten)
   - [Quote of the Day](#quote-of-the-day)
@@ -16,21 +18,33 @@ You can draw on Inky Frame using our tiny PicoGraphics display library.
 
 ## Examples
 
-The examples need `network_manager.py` and `WIFI_CONFIG.py` from the `common` directory to be saved to your Pico W. Open up `WIFI_CONFIG.py` in Thonny to add your wifi details (and save it when you're done).
+The wireless examples need `network_manager.py` and `WIFI_CONFIG.py` from the `common` directory to be saved to your Pico W. Open up `WIFI_CONFIG.py` in Thonny to add your wifi details (and save it when you're done).
 
 You'll also need to install the `micropython-urllib.urequest` library using Thonny's 'Tools' > 'Manage Packages' or `common/lib/urllib` which contains a compiled `.mpy` version that uses less RAM. You should place this directory in `lib` on your Pico W.
 
 Finally for examples loading images, you'll need `sdcard.mpy` from `common/lib`. You should place this file in `lib` on your Pico W.
 
+- [micropython/examples/common](../common)
+
+### Button Test
+[button_test.py](button_test.py)
+
+This example shows you a simple, non-interrupt way of reading Inky Frame's buttons with a loop that checks to see if buttons are pressed.
+
 ### Daily Activity
 [inky_frame_daily_activity.py](inky_frame_daily_activity.py)
 
 Generate a random activity from Bored API.
 
+### Image Gallery
+[/image_gallery](/image_gallery)
+
+This photo frame example displays local images on Inky Frame and lets you switch between them with the buttons. Use `image_gallery.py` if your images are stored on your Pico, or `image_gallery_sd.py` if the images are on your SD card.
+
 ### News
 [inky_frame_news.py](inky_frame_news.py)
 
-Display headlines from BBC news.
+Display headlines from BBC News.
 
 ### PlaceKitten
 [inky_frame_placekitten.py](inky_frame_placekitten.py)