Fix broken link for Clojure logo
Fix broken link for Clojure logo

Prior to this commit the clojure logo gif resulted in a 404 from
wikipedia. This commit fixes that by using the current clojure logo gif
from the clojure wikipedia entry.

brycecovert/play-clj,the2bears/play-clj,the2bears/play-clj,oakes/play-clj,oakes/play-clj,brycecovert/play-clj