Gemfile in fullcontact-0.16.0 vs Gemfile in fullcontact-0.17.0

@@ -1,4 +1,5 @@
 source "http://rubygems.org"
 
 gemspec
+gem 'nokogiri', '~> 1.6.0' # >= 1.7 is incompatible with Ruby 2.0
 gem 'codeclimate-test-reporter', group: :test, require: nil