meta: upgrade gems, ignore server .cache

.gitignore

@@ -15,3 +15,6 @@
 
 # Ignore .DS_store file
 .DS_Store
+
+# Ignore middleman server .cache
+/.cache

Gemfile.lock

@@ -1,18 +1,18 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (3.2.16)
+    activesupport (3.2.17)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
     chunky_png (1.3.0)
     coffee-script (2.2.0)
       coffee-script-source
       execjs
     coffee-script-source (1.7.0)
-    compass (0.12.2)
+    compass (0.12.4)
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
-      sass (~> 3.1)
+      sass (~> 3.2.17)
     em-websocket (0.5.0)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.5.3)
@@ -27,7 +27,7 @@ GEM
     http_parser.rb (0.5.3)
     i18n (0.6.9)
     json (1.8.1)
-    kramdown (1.3.1)
+    kramdown (1.3.3)
     listen (1.3.1)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
@@ -56,12 +56,12 @@ GEM
       middleman-core (>= 3.0.2)
       multi_json (~> 1.0)
       rack-livereload
-    middleman-sprockets (3.2.0)
-      middleman-core (~> 3.2)
+    middleman-sprockets (3.3.1)
+      middleman-core (>= 3.2)
       sprockets (~> 2.1)
       sprockets-helpers (~> 1.0.0)
       sprockets-sass (~> 1.0.0)
-    multi_json (1.8.4)
+    multi_json (1.9.2)
     rack (1.5.2)
     rack-livereload (0.3.15)
       rack
@@ -70,20 +70,20 @@ GEM
     rb-fsevent (0.9.4)
     rb-inotify (0.9.3)
       ffi (>= 0.5.0)
-    rb-kqueue (0.2.0)
+    rb-kqueue (0.2.2)
       ffi (>= 0.5.0)
-    sass (3.2.14)
-    sprockets (2.10.1)
+    sass (3.2.18)
+    sprockets (2.12.0)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
     sprockets-helpers (1.0.1)
       sprockets (~> 2.0)
-    sprockets-sass (1.0.2)
+    sprockets-sass (1.0.3)
       sprockets (~> 2.0)
       tilt (~> 1.1)
-    thor (0.18.1)
+    thor (0.19.1)
     tilt (1.4.1)
     uglifier (2.4.0)
       execjs (>= 0.3.0)