iOS6 only support
Incorporada funcionalidad de añadir a la nube
Añadidos iconos subir a la nube
Boton añadir a la nube IOS7
Navbar negro para ios6
Limpiados DLogs
Merge branch 'develop_iOS6' of https://github.com/spotbros/MWPhotoBrowser into develop_iOS6
Merge branch 'develop_iOS6' of github.com:spotbros/MWPhotoBrowser into develop

Conflicts:
	MWPhotoBrowser/Classes/MWPhotoBrowser.m