Fix issue when hash has symbol value for type

#29

Author: DEfusion

lib/jsonapi/rspec/type.rb

@@ -3,7 +3,7 @@ module RSpec
     module Type
       ::RSpec::Matchers.define :have_type do |expected|
         match do |actual|
-          JSONAPI::RSpec.as_indifferent_hash(actual)['type'] == expected.to_s
+          JSONAPI::RSpec.as_indifferent_hash(actual)['type'].to_s == expected.to_s
         end
       end
     end

spec/jsonapi/type_spec.rb

@@ -5,6 +5,14 @@
     expect('type' => 'foo').to have_type('foo')
   end
 
+  it 'succeeds when expectation is symbol' do
+    expect('type' => 'foo').to have_type(:foo)
+  end
+
+  it 'succeeds when type is a symbol' do
+    expect('type' => :foo).to have_type('foo')
+  end
+
   it 'fails when type mismatches' do
     expect('type' => 'foo').not_to have_type('bar')
   end