Remove files in the upload folder before transferring data files to cloud. Sometimes, old files would be left around, and uploaded.
Added retrieveEnsembleIdentifiers... method to CDEPersistentStoreEnsemble, to help people discover what ensembles exist. It is useful for document based apps.
Added method for removing the data for an ensemble from the cloud. Use with caution.
Changed file upload and download operation classes to use a NSURLRequest. Makes them more flexible.
Merge branch 'master' of https://github.com/drewmccormack/ensembles