Initialize README for Coin Collector game

Added game description, controls, and gameplay details.

Author: johnpranoy7

README.md

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+# [Coin Collector - 2D Platformer Game](https://johnpranoy7.github.io/Coin-Collector/)
+
+Welcome to **Coin Collector**, a fun and engaging 2D platformer game built with Unity. The objective is to collect as many coins as possible while avoiding enemies and spikes that reduce your health. The game features two levels of increasing challenge: Easy and Medium.
+
+## Play the game
+
+The game is hosted online and ready for you to play in your browser:
+
+[https://johnpranoy7.github.io/Coin-Collector/](https://johnpranoy7.github.io/Coin-Collector/)
+
+
+## Controls
+
+| Action      | Keys                |
+|-------------|---------------------|
+| Move Left   | Left Arrow, A       |
+| Move Right  | Right Arrow, D      |
+| Jump        | Spacebar            |
+| Pause Game  | Escape (Esc)        |
+
+## Gameplay
+
+- Collect coins to increase your score.
+- Avoid enemy characters and spikes to maintain your health.
+- Survive as long as possible to maximize your coin count.
+- Progress through two levels: Easy and Medium.
+
+
+Enjoy playing **Coin Collector**!