Limit addressable for ruby 1.8

Author: waterlink

Gemfile

@@ -7,6 +7,10 @@ group :test do
   gem "rack-test"
   gem "webmock"
   gem "rubocop", :platform => [:ruby_20, :ruby_21, :ruby_22]
+
+  if RUBY_VERSION.to_f < 1.9
+    gem "addressable", "< 2.4"
+  end
 end
 
 group :development, :test do