Error handling. Vendoring

Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>

vendor/github.com/dixonwille/wmenu/option.go

@@ -0,0 +1,21 @@
+package wmenu
+
+//Opt is what Menu uses to display options to screen.
+//Also holds information on what should run and if it is a default option
+type Opt struct {
+	ID        int
+	Text      string
+	Value     interface{}
+	function  func(Opt) error
+	isDefault bool
+}
+
+func newOption(id int, text string, value interface{}, def bool, function func(Opt) error) *Opt {
+	return &Opt{
+		ID:        id,
+		Text:      text,
+		Value:     value,
+		isDefault: def,
+		function:  function,
+	}
+}