Add installation instructions for pro icons

README.md

@@ -36,6 +36,26 @@ class MyWidget extends StatelessWidget {
 
 View the Flutter app in the `example` directory to see all the available `FontAwesomeIcons`.
 
+## Include pro icons
+
+If you bought font awesome pro icons, you can import them here. 
+
+:exclamation: By importing pro icons you acknowledge that it is your obligation to keep these files private, this includes **not** uploading your package to github or other public file sharing services.
+
+- [Download this package's source](https://github.com/michaelspiss/font_awesome_flutter/archive/master.zip), extract the folder and move it to a location of your choice
+- Download your font awesome pro icons (web version)
+- Move all `.ttf` files from the `webfonts` directory to this package's lib/fonts (replace existing fonts)
+- Move `icons.json` from `metadata` to this directory (package root)
+- Run `./tool/update.sh` (from this package's root)
+- Remove `#`s from `pubspec.yaml` at the indicated position
+- Add dependency to your project with the source being the location of your choice:
+```yaml
+dependencies:
+  font_awesome_flutter:
+    path: /path/to/font_awesome_flutter
+    ...
+```
+
 ## Contributors
 
   - Brian Egan