CreateVideo method with no file upload

The BC Media API lets you use the create_video method without uploading a file using the videoFullLength rendition parameter and setting a remote URL.  However, the API only had CreateVideo methods expecting file paths or upload info.

I wrote a simple method that allows you to skip the file upload for the remote URL scenario described here: http://support.brightcove.com/en/video-cloud/docs/creating-videos-remote-assets-using-media-api