Fix for infinite loop sequence when running under iOS 5.x.

https://github.com/B-Sides/ELCImagePickerController/issues/69
Add in the ability to select if the imagePicker returns the fullResolutionImage, or the fullScreenImage. https://github.com/B-Sides/ELCImagePickerController/pull/68
Fixed nil image crash on shared photo streams
Merge pull request #71 from mfrawley/master

Fixed nil image crash on shared photo streams
Merge branch 'master' of github.com:B-Sides/ELCImagePickerController into develop
Añadido metodo en el delegado para cuando la imagen es nil #1239