Add a button to examples/app.

examples/app/main.go

@@ -41,6 +41,9 @@ func nsmgr() {
 	fileMenu.AddItemWithTitle(ns.NSStringWithGoString("New"), nil, s)
 
 	a.SetMainMenu(m1)
+
+	b1 := ns.NSButtonWithTitle(ns.NSStringWithGoString("push"),s,nil)
+	w.ContentView().AddSubview(&b1.NSView,ns.NSWindowAbove,nil)
 	a.Run()
 }
 

examples/app/nswrap.toml

@@ -24,6 +24,7 @@ Classes = [
 	"NSWindow",
 	"NSView",
 	"NSScreen",
+	"NSButton",
 	"NSEvent",
 	"NSResponder",
 	"NSRunLoop",