Create README.md

Author: mxschll

README.md

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+# ASTRA Syntax Highlighting for IntelliJ and TextMate
+
+The `astra.tmbundle` provides syntax highlighting for ASTRA in editors that
+support TextMate bundles, such as IntelliJ and TextMate. This is an
+automated build generated from the original [ASTRA VSCode
+plugin](https://gitlab.com/astra-language/vscode-language-astra).
+
+## Download
+
+The latest version of the `astra.tmbundle` can be downloaded from the
+[Releases](https://github.com/mxschll/textmate-grammar-astra/releases) section
+of this GitHub repository.
+
+- **Download Link**:
+  [astra.tmbundle.zip](https://github.com/mxschll/textmate-grammar-astra/releases/latest/download/astra.tmbundle.zip)
+
+## Installation Instructions
+
+### IntelliJ IDEA
+
+1. **Download the Bundle**
+
+   - Download the `astra.tmbundle.zip` from the
+     [Releases](https://github.com/mxschll/textmate-grammar-astra/releases)
+     page.
+   - Extract the `astra.tmbundle` folder from the zip file.
+
+2. **Install the Bundle in IntelliJ IDEA**
+
+   - Open IntelliJ IDEA.
+   - Go to `File` > `Settings` (or `IntelliJ IDEA` > `Preferences` on macOS).
+   - Navigate to `Editor` > `TextMate Bundles`.
+   - Click the **`+`** button to add a new bundle.
+   - Select the extracted `astra.tmbundle` directory.
+   - Click `Apply` and `OK` to save the changes.
+
+### TextMate
+
+1. **Download the Bundle**
+
+   - Download the `astra.tmbundle.zip` from the
+     [Releases](https://github.com/mxschll/textmate-grammar-astra/releases) page.
+   - Ensure the file is unzipped.
+
+2. **Install the Bundle in TextMate**
+
+   - Double-click the `astra.tmbundle` folder.
+   - TextMate should automatically recognize and install the bundle.
+   - Alternatively, you can copy the `astra.tmbundle` directory to
+     `~/Library/Application Support/TextMate/Bundles/`.
+
+3. **Reload Bundles**
+
+   - In TextMate, go to `Bundles` > `Bundle Editor` > `Reload Bundles` to
+     refresh the bundle list.