Drop the turn dependency

Gemfile

@@ -27,6 +27,5 @@ group :test do
   gem 'mocha'
   gem 'rack-test'
   gem 'spinach'
-  gem 'turn'
   gem 'webmock'
 end

test/hyperclient/link_test.rb

@@ -16,7 +16,7 @@ module Hyperclient
 
         it 'returns nil if the property is not present' do
           link = Link.new('key', {}, entry_point)
-          link.send("_#{prop}").must_equal nil
+          link.send("_#{prop}").must_be_nil
         end
       end
     end
@@ -301,7 +301,7 @@ module Hyperclient
           end
 
           resource.foos._embedded.orders.first.id.must_equal 1
-          resource.foos.first.must_equal nil
+          resource.foos.first.must_be_nil
         end
 
         it 'backtracks when navigating links' do

test/test_helper.rb

@@ -1,12 +1,11 @@
 $LOAD_PATH << 'lib'
 
-require 'minitest/spec'
 require 'minitest/autorun'
+require 'minitest/pride'
 require 'mocha/setup'
-require 'turn'
 require 'json'
 
-MiniTest::Unit::TestCase.class_eval do
+MiniTest::Test.class_eval do
   def stub_request(conn, adapter_class = Faraday::Adapter::Test, &stubs_block)
     adapter_handler = conn.builder.handlers.find { |h| h.klass < Faraday::Adapter }
     conn.builder.swap(adapter_handler, adapter_class, &stubs_block)