rack-test version updated and removed from Gemfile

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Gemfile

@@ -39,7 +39,6 @@ elsif RUBY_ENGINE == "jruby"
 end
 
 # AP
-gem "rack-test", "0.5.3", :require => 'rack/test'
 gem "RedCloth", ">= 4.2.2"
 
 group :documentation do

actionpack/actionpack.gemspec

@@ -22,7 +22,7 @@
   s.add_dependency('activesupport', version)
   s.add_dependency('activemodel',   version)
   s.add_dependency('rack',          '~> 1.1.0')
-  s.add_dependency('rack-test',     '~> 0.5.0')
+  s.add_dependency('rack-test',     '~> 0.5.4')
   s.add_dependency('rack-mount',    '~> 0.6.3')
   s.add_dependency('erubis',        '~> 2.6.5')
 end