Bundle update

Gemfile.lock

 GIT
   remote: git://github.com/gregbell/active_admin.git
-  revision: 708e59018cdec2a078a173da0dbc0b732b3a9399
+  revision: 0c83cfe0b9b43a4a27a63c13f27d6682b0ff6cae
   specs:
     activeadmin (1.0.0.pre)
       arbre (~> 1.0, >= 1.0.2)
@@ -176,7 +176,7 @@ GEM
     kaminari (0.16.1)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
-    leaflet-rails (0.7.3)
+    leaflet-rails (0.7.4)
     libv8 (3.16.14.7)
     listen (2.7.11)
       celluloid (>= 0.15.2)