Sample for create package API

Hi, I've read through the rest api documentation at (http://docs.e-signlive.com/mc/content/c_esignlive_integrator_s_guide/rest_api/packages.htm) and am interested in finding out if there is a sample code available for invoking the "Create a new document package along with document binaries" API. A sample request payload is provided in the link but a sample code to create package via this api would be great. Specifically, would like to find out how the documents are attached in the json. thanks Neel