added example

example/main.go

@@ -0,0 +1,10 @@
+package main
+
+import "net/http"
+
+func main() {
+	http.HandleFunc("/", func(writer http.ResponseWriter, _ *http.Request) {
+		writer.Write([]byte("It works!"))
+	})
+	http.ListenAndServe(":8080", nil)
+}