With OS X Yosemite you can use iCloud Drive as a place to store your files. iCloud Drive syncs between Macs and the files can also be accessed by the appropriate apps in iOS 8 on the iPhone and iPad. You can also create your own folders in iCloud Drive on Yosemite and access files on iOS 8 from outside of the normal app folder for that type of document. iCloud Drive can also be used to store other types of files, even if the app does not support iCloud Drive. On iOS 8, you can import media from iCloud Drive and export files to it as well.