'My Photo Stream' automatically uploads your photos so you can view them all on every iOS device you are logged on to including iPods, Macs and iPads.
Under 'Photos', check if 'My Photo Stream' is turned ON and, if it isn’t, turn it on by tapping on it.
Look in the top menu, click in iPhoto and then click on Preferences to open up the options tab.
If you wish to enable Photo Sharing on your Mac or iPhone, you can do so by checking the 'Photo Sharing' option within the 'Settings'.
By using the My Photo Stream, your photos are automatically uploaded to your secure iCloud account and are ready to be viewed on any iOS device you are signed on to.