add cloud-widget.lua sample

samples/cloud-widget.lua

@@ -0,0 +1,16 @@
+-- name = "Cloud Widget"
+-- description = "Sample script that shows how to execute script from dropbox"
+-- type = "widget"
+-- author = "Andrey Gavrilov"
+-- version = "1.0"
+
+local file = "script.lua"
+local cloud_path = "/scripts/"..file
+local local_path = "/storage/emulated/0/Android/data/ru.execbit.aiolauncher/files/scripts/"..file
+
+cloud:get_file(cloud_path)
+
+function on_cloud_result(res, txt)
+	files:write(file, txt)
+	dofile(local_path)
+end