Upload multiple files with the file dialog or by dragging and dropping images onto the dashed region

Note: I've Removed the ability to actually upload files (it will error out silently since there is no error handler, so it'll still appear to work) because you guys were constantly filling up my Cloudinary account. Please create your own account and replace the "joezim007" and "ujpu6gyk" bits in the JavaScript with your own account's information.