Add step-by-step tutorial

samples/custom-drawer-menu.lua

@@ -0,0 +1,20 @@
+-- name = "Custom Drawer Menu"
+-- type = "drawer"
+
+function on_drawer_open()
+    local menuItems = {"Open Website", "Update list", "Launch App"}
+    drawer:show_list(menuItems)
+end
+
+function on_click(index)
+    if index == 1 then
+        system:open_browser("https://www.example.com")
+    elseif index == 2 then
+        local menuItems = {"Open Website", "List updated", "Launch App"}
+        drawer:show_list(menuItems)
+    elseif index == 3 then
+        apps:launch("com.android.contacts")
+    end
+    return true
+end
+