Update README

README.md

@@ -2,6 +2,17 @@
 - Render a timezone listbox (select element) in Laravel
 - Render a timezone array in Laravel
 
+## Versions and compatibility
+
+Currently, there are some branches of Timezone-List is compatible with the following version of Laravel framework
+
+| Timezone-List branch                                          | Laravel version  |
+| ------------------------------------------------------------- | ---------------- |
+| [4.x](https://github.com/JackieDo/Timezone-List/tree/4.x)     | 4.x              |
+| [5.x](https://github.com/JackieDo/Timezone-List/tree/5.x)     | 5.x              |
+
+This documentation is use for Laravel 5.x
+
 # Installation
 
 You can install this package through [Composer](https://getcomposer.org).