remove double CGI escape when PUTting an attachment

Signed-off-by: Marcos Tapajós <tapajos@gmail.com>

lib/couchrest/core/database.rb

@@ -107,7 +107,6 @@ module CouchRest
     # PUT an attachment directly to CouchDB
     def put_attachment(doc, name, file, options = {})
       docid = escape_docid(doc['_id'])
-      name = CGI.escape(name)
       uri = url_for_attachment(doc, name)
       JSON.parse(HttpAbstraction.put(uri, file, options))
     end