Add capybara-screenshot gem

Gemfile

@@ -223,14 +223,13 @@ end
 group :development, :test do
   gem 'coveralls', require: false
   gem 'rubocop', '0.28.0', require: false
-  # gem 'rails-dev-tweaks'
   gem 'spinach-rails'
   gem "rspec-rails", '2.99'
-  gem "capybara", '~> 2.2.1'
+  gem 'capybara', '~> 2.2.1'
+  gem 'capybara-screenshot', '~> 1.0.0'
   gem "pry-rails"
   gem "awesome_print"
   gem "database_cleaner"
-  gem "launchy"
   gem 'factory_girl_rails'
 
   # Prevent occasions where minitest is not bundled in packaged versions of ruby (see #3826)

Gemfile.lock

@@ -85,6 +85,9 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
+    capybara-screenshot (1.0.9)
+      capybara (>= 1.0, < 3)
+      launchy
     carrierwave (0.9.0)
       activemodel (>= 3.2.0)
       activesupport (>= 3.2.0)
@@ -677,6 +680,7 @@ DEPENDENCIES
   byebug
   cal-heatmap-rails (~> 0.0.1)
   capybara (~> 2.2.1)
+  capybara-screenshot (~> 1.0.0)
   carrierwave
   charlock_holmes
   coffee-rails
@@ -726,7 +730,6 @@ DEPENDENCIES
   jquery-turbolinks
   jquery-ui-rails
   kaminari (~> 0.15.1)
-  launchy
   letter_opener
   minitest (~> 5.3.0)
   mousetrap-rails