[Readme] - added description

Author: denid88

README.md

@@ -0,0 +1,22 @@
+# README: Localization File Guide
+
+## Overview
+
+This README provides a guide on how to effectively use and populate a localization file using
+the provided JSON model. The JSON structure encompasses various sections, including common elements,
+error messages, and screen-specific content for an authentication and onboarding system.
+
+## Categories and Guidelines
+
+### Common
+
+- **buttons**
+- **placeholders**
+
+### Errors
+
+- **validation**
+
+### Screens
+
+#### Particular Screen