Updating therubyracer to fix mac compatibility with libv8

Gemfile.lock

@@ -267,7 +267,8 @@ GEM
     fssm (0.2.10)
     geocoder (1.1.8)
     gmaps4rails (1.5.6)
-    haml (3.1.6)
+    haml (4.0.3)
+      tilt
     highline (1.6.18)
     hike (1.2.3)
     http_parser.rb (0.5.3)
@@ -292,7 +293,7 @@ GEM
       addressable (~> 2.3)
     letter_opener (1.0.0)
       launchy (>= 2.0.4)
-    libv8 (3.3.10.4)
+    libv8 (3.16.14.3)
     mail (2.5.4)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
@@ -365,6 +366,7 @@ GEM
       polyamorous (~> 0.5.0)
     rdoc (3.12.2)
       json (~> 1.4)
+    ref (1.0.5)
     representative (1.0.5)
       activesupport (>= 2.2.2)
       builder (>= 2.1.2)
@@ -391,7 +393,7 @@ GEM
     ruby-hmac (0.4.0)
     rubyzip (0.9.9)
     safe_yaml (0.9.5)
-    sass (3.2.10)
+    sass (3.2.12)
     sass-rails (3.2.6)
       railties (~> 3.2.0)
       sass (>= 3.1.10)
@@ -419,8 +421,9 @@ GEM
       tilt (~> 1.1, != 1.3.0)
     state_machine (1.1.2)
     stringex (1.3.3)
-    therubyracer (0.10.1)
-      libv8 (~> 3.3.10)
+    therubyracer (0.12.0)
+      libv8 (~> 3.16.14.0)
+      ref
     thor (0.18.1)
     tilt (1.4.1)
     timecop (0.6.2.2)