Update README.md

Author: himar33

.github/README.md

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-# TimerTool-Unity-Utility
+<img height="235" src="Images/banner.png" alt="banner" />
+
+# ABOUT
 TimerTool is a versatile and easy-to-use timer utility for Unity, designed to streamline time-based operations and events in your projects. This tool allows developers to create, manage, and control timers with various functionalities, including real-time and game-time support, pausing, looping, and event-triggering at specific intervals.