Added examples readme

micropython/examples/badger2040/README.md

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+# Badger 2040 Examples <!-- omit in toc -->
+
+- [Function Examples](#function-examples)
+  - [Battery](#battery)
+  - [Button Test](#button-test)
+- [Application Examples](#application-examples)
+  - [Badge](#badge)
+  - [Checklist](#checklist)
+  - [Clock](#clock)
+  - [E-Reader](#e-reader)
+  - [Fonts](#fonts)
+  - [Image](#image)
+  - [Launcher](#launcher)
+
+
+## Function Examples
+
+### Battery
+[battery.py](battery.py)
+
+An example of how to read the battery voltage and display a battery level indicator.
+
+### Button Test
+[button_test.py](button_test.py)
+
+An example of how to read Badger2040's buttons and display a unique message for each.
+
+
+## Application Examples
+
+### Badge
+[badge.py](badge.py)
+
+Create your own name badge! This application looks for two files on your MicroPython drive:
+* "badge.txt" - A text file containing 6 lines, corresponding to the 6 different piece of text on the badge
+* "badge-image.bin" - A 108x128px 1bit colour depth image to display alongside the text. You can use examples/badger2040/image_converter/convert.py to convert them:
+
+python3 convert.py --binary --resize image_file_1.png image_file_2.png image_file_3.png
+
+### Checklist
+[checklist.py](checklist.py)
+
+A checklist application, letting you navigate through items and tick each of them off.
+
+### Clock
+[clock.py](clock.py)
+
+A simple clock showing the time and date, that uses the EInk's fast speed to update every second
+
+### E-Reader
+[e-reader.py](e-reader.py)
+
+A mini text file e-reader. Comes pre-loaded with an excerpt of The Wind In the Willows.
+
+### Fonts
+[Fonts.py](checklist.py)
+
+A demonstration of the various fonts that can be used in your programs.
+
+### Image
+[image.py](image.py)
+
+An image gallery. Displays and lets you cycle through any images stored within the MicroPython device's `/images` directory. Images must be 296x128 pixels with 1bit colour depth. You can use examples/badger2040/image_converter/convert.py to convert them:
+
+python3 convert.py --binary --resize image_file_1.png image_file_2.png image_file_3.png
+
+### Launcher
+[Launcher.py](launcher.py)
+
+A launcher style application, that gives a menu of other applications that can be loaded, as well as information such as battery level.