Added possibilty to create a private gist.

lib/cocoa_gist.rb

@@ -20,8 +20,8 @@ def self.credentials
     }.reject { |_, v| v.empty? }
   end
 
-  def start(content, syntax = 'ruby')
-    request = post_request(params(content, syntax))
+  def start(content, syntax = 'ruby', private_gist = false)
+    request = post_request(params(content, syntax, private_gist))
     @connection = OSX::NSURLConnection.alloc.initWithRequest_delegate(request, self)
   end
 
@@ -54,11 +54,14 @@ def post_request(body)
     request
   end
 
-  def params(content, syntax)
-    self.class.credentials.merge({
+  def params(content, syntax, private_gist)
+    params = self.class.credentials.merge({
       'file_contents[gistfile1]' => content,
       'file_ext[gistfile1]'      => syntax_ext(syntax)
     }).inject('') { |body, (key, value)| body << "#{key}=#{CGI.escape(value)}&" }.chop
+
+    params << '&private=on' if private_gist
+    params
   end
 
   def syntax_ext(syntax)

test/cocoa_gist_test.rb

@@ -39,18 +39,12 @@
   end
 
   it "should serialize the parameters" do
-    @gist.send(:params, 'the content', 'ruby').split('&').sort.should ==
-      %w{ file_contents[gistfile1]=the+content  file_ext[gistfile1]=.rb  login=alloy  token=secret }.sort
-  end
-
-  it "should omit empty values from the serialized parameters" do
-    CocoaGist.stubs(:credentials).returns({})
-    @gist.send(:params, 'the content', 'html').split('&').sort.should ==
-      %w{ file_contents[gistfile1]=the+content  file_ext[gistfile1]=.htm }.sort
+    @gist.send(:params, 'the content', 'ruby', true).split('&').sort.should ==
+      %w{ file_contents[gistfile1]=the+content  file_ext[gistfile1]=.rb  login=alloy  token=secret private=on }.sort
   end
 
   it "should post the paste contents" do
-    @gist.expects(:params).with('the content', 'ruby').returns('the parameters')
+    @gist.expects(:params).with('the content', 'ruby', true).returns('the parameters')
 
     request = mock('NSMutableURLRequest')
     OSX::NSMutableURLRequest.expects(:requestWithURL_cachePolicy_timeoutInterval).with do |url, policy, timeout|
@@ -65,7 +59,7 @@
     connection = mock('NSURLConnection')
     OSX::NSURLConnection.any_instance.expects(:initWithRequest_delegate).with(request, @gist).returns(connection)
 
-    @gist.start('the content', 'ruby')
+    @gist.start('the content', 'ruby', true)
     @gist.connection.should.be connection
   end