Merge pull request #39 from nevar/fix_travis_image

Travis image fix

README.org

@@ -5,7 +5,7 @@ such as gen_servers, gen_fsms, or supervisors, and provide consumers
 with exclusive access to pool members using =pooler:take_member=.
 
 #+ATTR_HTML: alt="Build status images" title="Build status on Travis-CI"
-[[https://travis-ci.org/seth/pooler.png]]
+[[https://travis-ci.org/seth/pooler][https://travis-ci.org/seth/pooler.svg?branch=master]]
 
 ** What pooler does