More descriptive README

README.md

@@ -1,3 +1,14 @@
 # nativefier-apps
 
 Automated nativefier building of web applications
+
+## To use:
+
+- Choose a project name
+- Create the directories `desktops`, `icons`, `injects`, and `urls`.
+- You must at least create a text file in `urls` named `<project-name>.url` that contains the URL of the web page you want to turn into an app.
+- Nativefier will use the site's `favicon` for the created app.  If you want a different icon, put a `<project-name>.png` into `icons`
+- Macs must use `.icns` for icons.  The `generate-icns` script will convert `.png` files to `.icns`
+- If you would like to modify the site, you can inject CSS and JS by placing `<project-name>.css` or `<project-name>.js` into `injects`
+- For Linux, if you would like to provide a `.desktop` file, place `<project-name>.desktop` into the `desktops` directory
+- If you would like to make Windows apps on Linux, make sure `wine` is installed