Update README

Author: Mattia Roccoberton

README.md

@@ -87,9 +87,16 @@ the *upload_admin_post_path*) and it doesn't provide a way to remove images (jus
 the editor will not destroy them, you'll need to implement a purge logic for that).
 
 ## Do you like it? Star it!
-If you use this component just star it. A developer is more motivated to improve a project when there is some interest.
-
-Take a look at [other Active Admin components](https://github.com/blocknotes?utf8=✓&tab=repositories&q=activeadmin&type=source) that I made if you are curious.
+If you use this component just star it. A developer is more motivated to improve a project when there is some interest. My other [Active Admin components](https://github.com/blocknotes?utf8=✓&tab=repositories&q=activeadmin&type=source).
+
+<div style="background: #d1ecf1; margin: 0 auto; padding: 10px; text-align: center; width: 60%">
+  <p style="color: #0c5460">Or consider offering me a coffee please,<br/>it's a small thing but it is greatly appreciated.</p>
+  <form action="https://www.paypal.com/donate" method="post" target="_top">
+    <input type="hidden" name="hosted_button_id" value="CT86ENQEBBB5N" />
+    <input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif" border="0" name="submit" title="PayPal - The safer, easier way to pay online!" alt="Donate with PayPal button" />
+    <img alt="" border="0" src="https://www.paypal.com/en_IT/i/scr/pixel.gif" width="1" height="1" />
+  </form>
+</div>
 
 ## Contributors
 - [Mattia Roccoberton](http://blocknot.es): author