Bump capybara to 2.4.0

Gemfile

@@ -250,7 +250,7 @@ group :development, :test do
   # Generate Fake data
   gem 'ffaker', '~> 2.0.0'
-  gem 'capybara',            '~> 2.3.0'
+  gem 'capybara',            '~> 2.4.0'
   gem 'capybara-screenshot', '~> 1.0.0'
   gem 'poltergeist',         '~> 1.6.0'

Gemfile.lock

@@ -82,7 +82,7 @@ GEM
       columnize (~> 0.8)
       debugger-linecache (~> 1.2)
     cal-heatmap-rails (0.0.1)
-    capybara (2.3.0)
+    capybara (2.4.4)
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
       rack (>= 1.0.0)
@@ -753,7 +753,7 @@ DEPENDENCIES
   browser (~> 0.8.0)
   byebug
   cal-heatmap-rails (~> 0.0.1)
-  capybara (~> 2.3.0)
+  capybara (~> 2.4.0)
   capybara-screenshot (~> 1.0.0)
   carrierwave
   charlock_holmes
@@ -878,4 +878,4 @@ DEPENDENCIES
   wikicloth (= 0.8.1)
 BUNDLED WITH
-   1.10.4
+   1.10.5