updated gemfile

Gemfile

@@ -10,6 +10,8 @@ end
 
 group :assets do
   gem "sass"
+  gem "uglifier"
+  gem "therubyracer"
 end
 
 gem "rails", "3.1.1"

Gemfile.lock

@@ -62,11 +62,14 @@ GEM
       activesupport (~> 3.0)
       daemons
     erubis (2.7.0)
+    execjs (1.2.9)
+      multi_json (~> 1.0)
     factory_girl (2.2.0)
       activesupport
     hike (1.2.1)
     i18n (0.6.0)
     json (1.6.1)
+    libv8 (3.3.10.2)
     mail (2.3.0)
       i18n (>= 0.4.0)
       mime-types (~> 1.16)
@@ -145,12 +148,17 @@ GEM
     super_exception_notifier (3.0.13)
       actionmailer
       rake
+    therubyracer (0.9.8)
+      libv8 (~> 3.3.10)
     thor (0.14.6)
     tilt (1.3.3)
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)
     tzinfo (0.3.30)
+    uglifier (1.0.4)
+      execjs (>= 0.3.0)
+      multi_json (>= 1.0.2)
     webrobots (0.0.12)
       nokogiri (>= 1.4.4)
     whenever (0.7.0)
@@ -181,4 +189,6 @@ DEPENDENCIES
   simple_form
   simplecov
   super_exception_notifier
+  therubyracer
+  uglifier
   whenever