docs: 簡単な英語向けのREADME.mdを追加

Author: noah-devtech

README.md

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+# Processing4 Gradle Template
+
+This ia a cross-platform template project for developing Processing4.x with Gradle9 and Java17. You can develop Processing sketches as Java projects using IDEs like IntelliJ IDEA, Eclipse, or VS Code.
+
+## Quick Start
+
+1. Clone or download this repository to your local machine.
+2. Open a terminal in the project directory.
+3. Run the following command to build and run the Processing sketch.
+
+### For Windows
+
+```bash
+gradlew.bat run
+```
+
+### For macOS/Linux
+
+```bash
+./gradlew run
+```
+
+### Getting Started
+
+Edit `src/main/java/io/github/noah_devtech/Main.java` to start writing your code.
+
+## Technology Stack
+
+-   Processing: 4.3.3
+-   Gradle: 9.0.0
+-   Java(JDK): 17
+-   JOGL/GlueGen: 2.5.0