Add workflow badge to README.md

.github/workflows/rust.yml

@@ -0,0 +1,21 @@
+name: Dust Tests
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build
+        run: cargo build --verbose
+      - name: Run tests
+        run: cargo test --verbose

README.md

@@ -1,4 +1,4 @@
-# Dust
+# Dust ![Tests](https://github.com/solaeus/dust/actions/workflows/rust.yml/badge.svg)
 
 **Fast**, **safe** and **easy-to-use** general-purpose programming language.
 
@@ -23,6 +23,7 @@ fn fib (n: int) -> int {
 write_line(fib(25))
 ```
 
+
 ## Highlights
 
 - Easy to read and write