Addressable 2.4.0 is lates with Ruby 1.9.3 support

Author: bergholdt

Gemfile

@@ -19,6 +19,7 @@ elsif RUBY_VERSION =~ /^1\.9\.3.*/
   gem "rest-client", "1.8.0"
   gem "reek", "2.2.1"
   gem "rubocop", platforms: :mri, groups: [:test, :local_development]
+  gem 'addressable', '<= 2.4.0'
 elsif RUBY_VERSION =~ /^1\.9\.2.*/
   # because of https://github.com/railsbp/rails_best_practices/blob/master/rails_best_practices.gemspec
   gem "activesupport", "~> 3.2"