Added yaml response parsing

Signed-off-by: John Nunemaker <nunemaker@gmail.com>

lib/httparty.rb

@@ -14,7 +14,9 @@ module HTTParty
     'text/json'              => :json,
     'application/javascript' => :json,
     'text/javascript'        => :json,
-    'text/html'              => :html
+    'text/html'              => :html,
+    'application/x-yaml'     => :yaml,
+    'text/yaml'              => :yaml
   } unless defined?(AllowedFormats)
 
   def self.included(base)

lib/httparty/request.rb

@@ -110,6 +110,8 @@ def parse_response(body)
             HTTParty::Parsers::XML.parse(body)
           when :json
             HTTParty::Parsers::JSON.decode(body)
+          when :yaml
+            YAML::load(body)
           else
             body
           end

spec/httparty/request_spec.rb

@@ -94,6 +94,12 @@ def stub_response(body, code = 200)
       @request.send(:parse_response, json).should == {'books' => {'book' => {'id' => '1234', 'name' => 'Foo Bar!'}}}
     end
 
+    it 'should handle yaml automatically' do
+      yaml = "books: \n  book: \n    name: Foo Bar!\n    id: \"1234\"\n"
+      @request.options[:format] = :yaml
+      @request.send(:parse_response, yaml).should == {'books' => {'book' => {'id' => '1234', 'name' => 'Foo Bar!'}}}
+    end
+
     it "should include any HTTP headers in the returned response" do
       @request.options[:format] = :html
       response = stub_response "Content"

spec/httparty_spec.rb

@@ -144,6 +144,11 @@ def second_method
       @klass.default_options[:format].should == :json
     end
 
+    it "should allow yaml" do
+      @klass.format :yaml
+      @klass.default_options[:format].should == :yaml
+    end
+
     it 'should not allow funky format' do
       lambda do
         @klass.format :foobar