This is a temporary plugin which adds two new formtools which support uploading direct to S3.
It includes an s3upload formtool for single file properties and an s3arrayupload formtool
for array properties (multiple file uploads using related objects).
These features will eventually be integrated into the image and file formtools in Core, so this plugin is intended as a stop gap alternative until then.
It makes use of the signing and utils portion of the aws-cfml library from:
https://github.com/jcberquist/aws-cfml
The project must be using S3 for all file storage.
The S3 bucket CORS policy must allow GET and POST for the website domain.