new crafter.build structure

examples/HelloWorld/README.md

@@ -0,0 +1,12 @@
+![alt text](https://github.com/Catcrafts/Crafter.Web/blob/master/samples/HelloWorld/HelloWorld.png?raw=true)
+
+This sample demonstrates a simple hello world.
+
+```bash
+crafter-build build executable
+run.sh
+```
+
+and go to `http://localhost:8080/`
+
+if caddy is not installed you can use your favorite static file server instead