Add example and building for example

Makefile

@@ -0,0 +1,4 @@
+def: test
+
+test:
+	go build -o ./bin/$@ ./examples/$@

examples/test/main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+
+	"git.qowevisa.me/Qowevisa/tuimenu/simple"
+)
+
+func main() {
+	m := simple.CreateMenu(
+		simple.WithCustomTitle("My Custom Title"),
+	)
+	nameName, err := m.AddCommand("0", "NameName", func(m *simple.Menu) error {
+		fmt.Printf("hello, world\n")
+		return nil
+	})
+	if err != nil {
+		panic(err)
+	}
+	gr := nameName.AddGroupingCommand("gr1", "Some grouping")
+	gr.AddExecCommand("some1", "Some func that does funny stuff", func(m *simple.Menu) error {
+		fmt.Printf("Some funcy stuff\n")
+		return nil
+	})
+	m.AddCommand("lalalla", "something", simple.EmptyAction)
+	m.Start()
+}