Royal wedding photographer Alexi Lubomirski on new children's book, royal baby

Photographer Alexi Lubomirski captured the official portraits of Prince Harry and Meghan Markle on their wedding day and took their engagement photos. Now Lubomirski has a new children's book, "Thank You for My Dreams: Bedtime Prayers of Gratitude." Lubomirski joins "CBS This Morning" to discuss his inspiration behind the book and the highly anticipated arrival of the royal baby.