make integration spec work with javascript driver too

Gemfile.lock

@@ -90,6 +90,7 @@ GEM
     coffee-script-source (1.3.3)
     commonjs (0.2.6)
     daemons (1.1.9)
+    database_cleaner (0.7.1)
     diff-lcs (1.2.4)
     erubis (2.7.0)
     eventmachine (1.0.3)
@@ -105,6 +106,8 @@ GEM
       railties (>= 3.0.0)
     faker (1.1.2)
       i18n (~> 0.5)
+    faye-websocket (0.4.7)
+      eventmachine (>= 0.12.0)
     ffi (1.4.0)
     haml (3.1.7)
     haml-rails (0.3.5)
@@ -116,6 +119,7 @@ GEM
     hashery (2.0.1)
     highline (1.6.19)
     hike (1.2.1)
+    http_parser.rb (0.5.3)
     i18n (0.6.1)
     inherited_resources (1.3.1)
       has_scope (~> 0.5.0)
@@ -168,6 +172,10 @@ GEM
       Ascii85 (~> 1.0.0)
       hashery (~> 2.0)
       ruby-rc4
+    poltergeist (1.1.2)
+      capybara (~> 2.0.1)
+      faye-websocket (~> 0.4.4)
+      http_parser.rb (~> 0.5.3)
     polyamorous (0.5.0)
       activerecord (~> 3.0)
     polyglot (0.3.3)
@@ -308,6 +316,7 @@ DEPENDENCIES
   client_side_validations
   coffee-rails (~> 3.2.1)
   daemons
+  database_cleaner
   exception_notification
   factory_girl_rails (~> 4.0)
   faker
@@ -319,6 +328,7 @@ DEPENDENCIES
   mailcatcher
   meta_search
   mysql2
+  poltergeist
   prawn
   quiet_assets
   rails (~> 3.2.9)