Add instructions for web

Author: PythonCoderAS

README.md

@@ -6,10 +6,18 @@ Read full and updated documentation: https://pythoncoderas.github.io/bbcode-ast/
 
 ## Installation
 
+### Node.js
+
 ```bash
 npm install --save bbcode-ast
 ```
 
+### Browser
+
+Load the library from https://cdn.jsdelivr.net/npm/bbcode-ast@1/dist/bundle.min.js.
+
+This will add a `bbcode_ast` variable to the `window` global. The default parser can be accessed through `bbcode_ast.default`.
+
 ## Usage
 
 You can either use the default parser or construct your own parser. Once you have a `Parser`, call the `parse` method on