Bundle update

Gemfile.lock

 GIT
   remote: git://github.com/activeadmin/activeadmin.git
-  revision: aa23647f29d5596663755822b7bfee09a3b989b6
+  revision: ad4caab46f1813bedf5acdb7739a17da546a5609
   specs:
     activeadmin (1.0.0.pre)
       arbre (~> 1.0, >= 1.0.2)
@@ -282,7 +282,7 @@ GEM
       json (~> 1.4)
     redcarpet (3.2.0)
     ref (1.0.5)
-    responders (1.1.1)
+    responders (1.1.2)
       railties (>= 3.2, < 4.2)
     rubocop (0.27.0)
       astrolabe (~> 1.3)
@@ -308,7 +308,7 @@ GEM
     select2-rails (3.5.9.1)
       thor (~> 0.14)
     sexp_processor (4.4.4)
-    simple_calendar (1.1.6)
+    simple_calendar (1.1.7)
       rails (>= 3.0)
     simple_oauth (0.3.0)
     simplecov (0.9.1)