bump selenium-webdriver

Gemfile

@@ -184,7 +184,7 @@ group :test do
   gem 'capybara',           '1.1.3'
   gem 'cucumber-rails',     '1.3.0', :require => false
   gem 'database_cleaner',   '0.9.1'
-  gem 'selenium-webdriver', '2.30.0'
+  gem 'selenium-webdriver', '2.31.0'
   
 
   # Jasmine (client side application tests (JS))

Gemfile.lock

@@ -357,7 +357,7 @@ GEM
       railties (~> 3.2.0)
       sass (>= 3.1.10)
       tilt (~> 1.3)
-    selenium-webdriver (2.30.0)
+    selenium-webdriver (2.31.0)
       childprocess (>= 0.2.5)
       multi_json (~> 1.0)
       rubyzip
@@ -480,7 +480,7 @@ DEPENDENCIES
   rspec-rails (= 2.13.0)
   ruby-oembed (= 0.8.8)
   sass-rails (= 3.2.6)
-  selenium-webdriver (= 2.30.0)
+  selenium-webdriver (= 2.31.0)
   spork (= 1.0.0rc3)
   timecop (= 0.5.9.2)
   twitter (= 4.5.0)