Use mustang for testing, therubyracer in production

.travis.yml

@@ -1,3 +1,4 @@
+bundler_args: "--without assets:development:production"
 script: "bundle exec rake db:migrate test"
 rvm:
   - 1.8.7

Gemfile

@@ -3,10 +3,9 @@ source 'http://rubygems.org'
 gem 'rails', '3.1.0.rc5'
 gem 'arel'
 gem 'devise'
-gem 'rails_admin', :git => 'git://github.com/sferik/rails_admin.git'
 gem 'geokit'
 gem 'haml', '~> 3.2.0.alpha'
-gem 'therubyracer', :platforms => :ruby
+gem 'rails_admin', :git => 'git://github.com/sferik/rails_admin.git'
 
 platforms :jruby do
   gem 'jruby-openssl'
@@ -25,8 +24,13 @@ group :development, :production do
   gem 'pg'
 end
 
+group :production do
+  gem 'therubyracer', :platforms => :ruby
+end
+
 group :test do
   gem 'ZenTest'
+  gem 'mustang', :platforms => :ruby
   gem 'simplecov'
   gem 'sqlite3'
   gem 'webmock'

Gemfile.lock

@@ -68,6 +68,7 @@ GEM
       treetop (~> 1.4.8)
     mime-types (1.16)
     multi_json (1.0.3)
+    mustang (0.2.2)
     orm_adapter (0.0.5)
     pg (0.11.0)
     polyglot (0.3.2)
@@ -135,6 +136,7 @@ DEPENDENCIES
   geokit
   haml (~> 3.2.0.alpha)
   jruby-openssl
+  mustang
   pg
   rails (= 3.1.0.rc5)
   rails_admin!