CI button in readme

README.md

@@ -1,5 +1,6 @@
 # Embedded-gfx
 <a href="https://crates.io/crates/embedded-gfx"><img alt="crates.io" src="https://img.shields.io/crates/v/embedded-gfx"></a>
+![workflow](https://github.com/Kezii/embedded-gfx/actions/workflows/rust.yml/badge.svg)
 
 This is an opengl-like library to draw 3D graphics in an embedded system, built around embedded-graphics.
 
@@ -25,4 +26,4 @@ You can find a working example in the *Rust on M5Stack Cardputer* project
 
 https://github.com/Kezii/Rust-M5Stack-Cardputer
 
-https://github.com/Kezii/Rust-M5Stack-Cardputer/assets/3357750/658bd303-03c5-4dc2-9c49-75a98b667719
+https://github.com/Kezii/Rust-M5Stack-Cardputer/assets/3357750/658bd303-03c5-4dc2-9c49-75a98b667719