Remove PayPal donation link

README.md

@@ -11,7 +11,7 @@ Keep track of development and community news:
 * Follow [@DevDocs](https://twitter.com/DevDocs) on Twitter
 * Join the [mailing list](https://groups.google.com/d/forum/devdocs)
 
-DevDocs is free and open source. If you like it, please consider donating through [Gittip](https://www.gittip.com/Thibaut/) or [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=4PTFAGT7K6QVG). Your support helps sustain the project and is highly appreciated.
+DevDocs is free and open source. If you like it, please consider funding the project on [Gittip](https://www.gittip.com/Thibaut/). Thanks!
 
 **Table of Contents:** [Quick Start](#quick-start) · [Vision](#vision) · [App](#app) · [Scraper](#scraper) · [Commands](#available-commands) · [Contributing](#contributing) · [License](#copyright--license) · [Questions?](#questions)
 

assets/javascripts/templates/pages/about_tmpl.coffee

@@ -23,10 +23,8 @@ app.templates.aboutPage = -> """
     <li>Follow <a href="https://twitter.com/DevDocs">@DevDocs</a> on Twitter
     <li>Join the <a href="https://groups.google.com/d/forum/devdocs">mailing list</a>
   </ul>
-  <p class="_note _note-green">If you use and like DevDocs, please consider donating through
-    <a href="https://www.gittip.com/Thibaut/">Gittip</a> or
-    <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=4PTFAGT7K6QVG">PayPal</a>.<br>
-    Your support helps sustain the project and is highly appreciated.
+  <p class="_note _note-green">If you like DevDocs, please consider funding the project on
+    <a href="https://www.gittip.com/Thibaut/">Gittip</a>. Thanks!<br>
 
   <h2 class="_lined-heading" id="credits">Credits</h2>
   <table class="_credits">