Update README.md

Author: tabacitu

README.md

@@ -9,6 +9,11 @@
 
 An admin panel for menu items on Laravel 5, using [Backpack\CRUD](https://github.com/Laravel-Backpack/crud). Add, edit, reorder, nest, rename menu items and link them to [Backpack\PageManager](https://github.com/Laravel-Backpack/pagemanager) pages, external link or custom internal link.
 
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+> ### Security updates and breaking changes
+> Please **[subscribe to the Backpack Newsletter](http://eepurl.com/bUEGjf)** so you can find out about any security updates, breaking changes or major features. We send an email every 1-2 months.
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 ## Install
 
 Since MenuCRUD is just a Backpack\CRUD example, you can choose to install it one of two ways.
@@ -108,6 +113,8 @@ Please see [CONTRIBUTING](CONTRIBUTING.md) and [CONDUCT](CONDUCT.md) for details
 
 If you discover any security related issues, please email [email protected] instead of using the issue tracker.
 
+Please **[subscribe to the Backpack Newsletter](http://eepurl.com/bUEGjf)** so you can find out about any security updates, breaking changes or major features. We send an email every 1-2 months.
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 ## Credits
 
 - [Cristian Tabacitu][link-author]