DocuSign, e-signature provider, announced today that it has raised $47.5 million in Series D Funding led by Kleiner Perkins Caufield & Byers.  Other participants include: Accel Partners, Comcast Ventures, SAP Ventures, Salesforce.com, the National Association of REALTORS.  The funding will be used for international growth and product development.  Mary Meeker, from Kleiner, has joined DocuSign's board of directors.