Update capybara

Gemfile

@@ -60,7 +60,6 @@ end
 group :test, :staging do
   gem 'capybara'
   gem 'database_cleaner'
-  gem "poltergeist"
   gem 'launchy'
   gem 'selenium-webdriver'
   gem 'simplecov', :require => false

Gemfile.lock

@@ -103,7 +103,6 @@ GEM
     chartkick (3.0.2)
     childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
-    cliver (0.3.2)
     coderay (1.1.2)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
@@ -257,10 +256,6 @@ GEM
     parser (2.6.0.0)
       ast (~> 2.4.0)
     pg (1.1.4)
-    poltergeist (1.18.1)
-      capybara (>= 2.1, < 4)
-      cliver (~> 0.3.1)
-      websocket-driver (>= 0.2.0)
     powerpack (0.1.2)
     pry (0.12.2)
       coderay (~> 1.1.0)
@@ -470,7 +465,6 @@ DEPENDENCIES
   launchy
   parallel_tests
   pg
-  poltergeist
   pry-rails
   pry-rescue
   puma

spec/support/capybara.rb

@@ -1,16 +1,15 @@
-require 'capybara/poltergeist'
+Capybara.server = :puma # Until your setup is working
+# Capybara.server = :puma, { Silent: true } # To clean up your test output
+#asset_hosts = {
+#  staging: 'http://13staging.owlephant.icu',
+#  development: 'http://localhost:3000',
+#  test: 'http://localhost:3000'
+#}
 
-asset_hosts = {
-  staging: 'http://staging.tienlen.ga',
-  development: 'http://localhost:3000',
-  test: 'http://localhost:3000'
-}
+#if ENV['RAILS_ENV'] == 'staging'
+#  #Capybara.run_server = false
+#  Capybara.app_host = asset_hosts[ENV['RAILS_ENV'].to_sym]
+#end
+#Capybara.asset_host = asset_hosts[ENV['RAILS_ENV'].to_sym]
 
-if ENV['RAILS_ENV'] == 'staging'
-  #Capybara.run_server = false
-  Capybara.app_host = asset_hosts[ENV['RAILS_ENV'].to_sym]
-end
-Capybara.asset_host = asset_hosts[ENV['RAILS_ENV'].to_sym]
-
-Capybara.javascript_driver = :poltergeist
-#Capybara.javascript_driver = :selenium
+Capybara.javascript_driver = :selenium_chrome_headless