Update README.md to include ASTX command line usage and installation instructions

Author: TheRealFloatDev

README.md

@@ -1,5 +1,13 @@
-# node-runner-template
-This is a template for creating basic executable node projects
+# Command line for ASTX
+Check out ASTX [here](https://github.com/TheRealFloatDev/astx) for more information.
 
-## License
-This project is proprietary and unlincensed. You may not use this project without the express permission of the author.
+## Installation
+```bash
+npm install -g @astx/runtime
+```
+
+## Usage
+```bash
+astx run <file> # Run a .astx file
+astx compile <input> <output> # Compile a .js file to a .astx file
+```