Relax version constraint on Faraday.

Gemfile

@@ -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

fullcontact.gemspec

@@ -12,8 +12,8 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'webmock', '~> 1.6'
   s.add_development_dependency 'yard', '~> 0.7'
   s.add_runtime_dependency 'hashie', ['>= 2.0', '< 4.0']
-  s.add_runtime_dependency 'faraday', '~> 0.10.0'
-  s.add_runtime_dependency 'faraday_middleware', '>= 0.10'
+  s.add_runtime_dependency 'faraday', '~> 0.10'
+  s.add_runtime_dependency 'faraday_middleware', '~> 0.10'
 
   s.author = 'FullContact, Inc.'
   s.description = %q{A Ruby wrapper for the FullContact API}