Add hello world action

.github/workflows/hello-world.yaml

@@ -0,0 +1,20 @@
+name: hello-world-example
+on:
+  push:
+jobs:
+  say-hello:
+    runs-on: alpine
+    steps:
+      -
+        name: Say Hello
+        run: echo "Hello world!"
+      -
+        name: Do stuff
+        run: |
+          echo "Step 1..."
+          echo "Step 2..."
+          echo "Step 3..."
+      -
+        name: Say Goodbye
+        run: echo "Goodbye!"
+