lean into examples

examples/hello-web/hello-web.go

@@ -0,0 +1,13 @@
+package main
+
+import "net/http"
+
+func hello(res http.ResponseWriter, req *http.Request) {
+    res.Header().Set("Content-Type", "text/plain")
+    res.Write([]byte("Hello web\n"))
+}
+
+func main() {
+    http.HandleFunc("/", hello)
+    http.ListenAndServe(":5000", nil)
+}