README: add Gittip link.

Closes #20482.

1 files changed, 7 insertions, 0 deletions

diff --git a/README.md b/README.md
index a8a0237d5..1999062a1 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,12 @@ License
 -------
 Code is under the [BSD 2 Clause (NetBSD) license][license].
 
+Donations
+---------
+We accept tips through [Gittip][tip].
+
+[![Gittip](http://img.shields.io/gittip/Homebrew.png)](https://www.gittip.com/Homebrew/)
+
 [home]:http://brew.sh
 [wiki]:http://wiki.github.com/Homebrew/homebrew
 [mxcl]:http://twitter.com/mxcl
@@ -30,3 +36,4 @@ Code is under the [BSD 2 Clause (NetBSD) license][license].
 [braumeister]:http://braumeister.org
 [license]:https://github.com/Homebrew/homebrew/tree/master/Library/Homebrew/LICENSE
 [team]:https://github.com/Homebrew?tab=members
+[tip]:https://www.gittip.com/Homebrew/