README: point to usage instructions

README.md

@@ -4,9 +4,12 @@ Changes VS Code's built-in markdown preview to match Github's styling
 
 ![](https://github.com/mjbvz/vscode-github-markdown-preview-style/raw/master/docs/example.png)
 
-
-
 # Features 
 - Preview what your markdown will look like rendered on Github 
 - Extends VS Code's built-in markdown preview
 - Customize styling using your own [`markdown.styles`](https://code.visualstudio.com/Docs/languages/markdown#_using-your-own-css) css
+
+# Usage
+
+Please see the [VSCode Markdown Preview documentation](https://code.visualstudio.com/Docs/languages/markdown#_markdown-preview)
+for instructions on how to use this extension.