Mon May 24 00:56:41 2010  Guilherme Silveira <guilherme.silveira@caelum.com.br>

	* http.rb: adding support to rfc5789 patch verb

Added a Net::HTTP::Patch class which expects a message body and response body. It recycles the post method into a patch one, that will send the encoded representation to the server. Summarizing, a new class has been created, the post method extracted into send_entity, including a new argument, which defines which class to use (Post or Patch) and finally a patch method was created.

