Added UPGRADING.md

UPGRADING.md

@@ -0,0 +1,15 @@
+# Upgrading
+Because there are many breaking changes an upgrade is not that easy. 
+There are many edge cases this guide does not cover. 
+We accept PRs to improve this guide.
+
+## From v1.6 to v2.0
+Because the CSV default format was changed, please follow this steps:
+1. Please run the `php artisan larex:export` **before upgrading to v2.0!**
+2. Delete the `localization.csv` file inside _project-root/resources/lang_ folder
+2. Upgrade the library to **v2.0**
+3. Run the `php artisan larex:import` command
+
+## From v1.5 to v1.6
+- No breaking changes
+- Dropped support for **PHP 7.2**, please update at least to **PHP 7.3**