Merge pull request #593 from backspace/patch-1

Link BitHub image to donation page. Fixes #591

README.md

@@ -10,7 +10,7 @@ TextSecure is a replacement for the standard text messaging application, allowin
 
 Current BitHub Payment For Commit:
 =================
-![Current Price](https://bithub.herokuapp.com/v1/status/payment/commit)
+[![Current Price](https://bithub.herokuapp.com/v1/status/payment/commit)](https://whispersystems.org/blog/bithub/)
 
 
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