Update gems

Gemfile.lock

 GIT
   remote: https://github.com/vmg/redcarpet.git
-  revision: 52c5fa3c5753d2125e827f235cdf4cb730484902
+  revision: 84d610317182be56e1f4bc74992c6cd1ff1fa1d7
   specs:
     redcarpet (3.0.0)
 
@@ -27,12 +27,12 @@ GEM
       multi_json (~> 1.0)
     ffi (1.9.3)
     fssm (0.2.10)
-    haml (4.0.4)
+    haml (4.0.5)
       tilt
     hike (1.2.3)
     http_parser.rb (0.5.3)
     i18n (0.6.9)
-    kramdown (1.3.0)
+    kramdown (1.3.1)
     listen (1.3.1)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
@@ -56,7 +56,7 @@ GEM
       rack-test (~> 0.6.1)
       thor (>= 0.15.2, < 2.0)
       tilt (~> 1.4.1)
-    middleman-gh-pages (0.0.2)
+    middleman-gh-pages (0.0.3)
       rake (> 0.9.3)
     middleman-livereload (3.1.0)
       em-websocket (>= 0.2.0)
@@ -71,14 +71,14 @@ GEM
     middleman-syntax (1.2.1)
       middleman-core (~> 3.0)
       rouge (~> 0.3.0)
-    multi_json (1.8.2)
+    multi_json (1.8.4)
     rack (1.5.2)
     rack-livereload (0.3.15)
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
-    rake (10.1.0)
-    rb-fsevent (0.9.3)
+    rake (10.1.1)
+    rb-fsevent (0.9.4)
     rb-inotify (0.9.3)
       ffi (>= 0.5.0)
     rb-kqueue (0.2.0)
@@ -86,7 +86,7 @@ GEM
     rouge (0.3.10)
       thor
     ruby18_source_location (0.2)
-    sass (3.2.12)
+    sass (3.2.13)
     sprockets (2.10.1)
       hike (~> 1.2)
       multi_json (~> 1.0)