[docs] Add Go reference badge

elgopher · elgopher · commit 631786248339 · 2022-07-25T00:11:39.000+02:00
diff --git a/README.md b/README.md
@@ -1,5 +1,7 @@
 # pi
 
+[![Go Reference](https://pkg.go.dev/badge/github.com/elgopher/pi.svg)](https://pkg.go.dev/github.com/elgopher/pi)
+
 The retro game development engine for Go, inspired by [Pico-8](https://www.lexaloffle.com/pico-8.php) and powered by [Ebitengine](https://ebiten.org/).
 
 ## FAQ

-Original file line number
+Diff line change
@@ @@ -1,5 +1,7 @@ @@
 # pi
 +[![Go Reference](https://pkg.go.dev/badge/github.com/elgopher/pi.svg)](https://pkg.go.dev/github.com/elgopher/pi)
++
 The retro game development engine for Go, inspired by [Pico-8](https://www.lexaloffle.com/pico-8.php) and powered by [Ebitengine](https://ebiten.org/).
 ## FAQ