Update README.md

Author: milwad-dev

README.md

@@ -233,3 +233,11 @@ contribute. [CONTRIBUTING](https://github.com/milwad-dev/laravel-attributes/grap
 
 If you've found a bug regarding security please mail [milwad.dev@gmail.com](mailto:milwad.dev@gmail.com) instead of
 using the issue tracker.
+
+## Donate
+
+If this package is helpful for you, you can buy a coffee for me :) ❤️
+
+- Iraninan Gateway: https://daramet.com/milwad_khosravi
+- Paypal Gateway: SOON
+- MetaMask Address: `0xf208a562c5a93DEf8450b656c3dbc1d0a53BDE58`