It is against FAA regulations to fly a drone for commercial purposes. However, you can apply for an exemption from that rule. Federal Robotics received such an exemption on April 6th, 2016.
Cover Page from FAA 333 Exemption for Federal Robotics
Federal Robotics
31 Clearwater Dr.
Amherst, New York 14228
31 Clearwater Dr.
Amherst, New York 14228