redirect mobile clients to a given MOBILE_ENDPOINT

Gemfile

@@ -5,6 +5,7 @@ source :rubygems
 gem 'puma'
 gem 'rack-ssl', '~> 1.3'
 gem 'rack-cache'
+gem 'rack-mobile-detect'
 gem 'sinatra'
 
 group :assets do

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: git://github.com/livingsocial/rake-pipeline.git
-  revision: ae0795842a8958934d872a005d18b16161aa05fe
+  revision: 50b8d77b703c96539a433ee53a680c43542aaa75
   specs:
     rake-pipeline (0.8.0)
       json
@@ -37,7 +37,7 @@ GEM
     foreman (0.60.2)
       thor (>= 0.13.6)
     fssm (0.2.9)
-    gli (2.5.0)
+    gli (2.5.2)
     guard (1.5.4)
       listen (>= 0.4.2)
       lumberjack (>= 1.0.2)
@@ -61,7 +61,7 @@ GEM
     lumberjack (1.0.2)
     method_source (0.8.1)
     mime-types (1.19)
-    multi_json (1.4.0)
+    multi_json (1.5.0)
     pry (0.9.10)
       coderay (~> 1.0.5)
       method_source (~> 0.8)
@@ -71,13 +71,15 @@ GEM
     rack (1.4.1)
     rack-cache (1.2)
       rack (>= 0.4)
-    rack-protection (1.2.0)
+    rack-mobile-detect (0.4.0)
+      rack
+    rack-protection (1.3.2)
       rack
     rack-ssl (1.3.2)
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
-    rake (0.9.5)
+    rake (0.9.6)
     rake-pipeline-i18n-filters (0.0.5)
       rake-pipeline (~> 0.6)
     rb-fsevent (0.9.2)
@@ -89,7 +91,7 @@ GEM
       rspec-core (~> 2.12.0)
       rspec-expectations (~> 2.12.0)
       rspec-mocks (~> 2.12.0)
-    rspec-core (2.12.1)
+    rspec-core (2.12.2)
     rspec-expectations (2.12.0)
       diff-lcs (~> 1.1.3)
     rspec-mocks (2.12.0)
@@ -128,6 +130,7 @@ DEPENDENCIES
   localeapp-handlebars_i18n
   puma
   rack-cache
+  rack-mobile-detect
   rack-ssl (~> 1.3)
   rake (~> 0.9.2)
   rake-pipeline!

config.ru

@@ -5,6 +5,8 @@ ENV['RAILS_ENV']  = ENV['RACK_ENV']
 $: << 'lib'
 require 'travis/web'
 
+use Rack::MobileDetect, :redirect_to => ENV['MOBILE_ENDPOINT'] if ENV['MOBILE_ENDPOINT']
+
 use Travis::Web::SetToken
 use Travis::Web::Allow
 use Travis::Web::ApiRedirect do |app|