A promising start-up company in Naples has packed its bags and left its home. Proximus Mobility has moved out of Naples and out of Florida. The company’s headquarters are now in Atlanta, Ga. The mobile marketing company expects to create 100 jobs there over the next three years. . . .Proximus Mobility is now inside the Advanced Technology Development Center, a recognized science and technology incubator at the Georgia Institute of Technology. . . This is where we are starting out here in Atlanta,” Zeto said. “It gives us great access to the university and Georgia Tech is a great school.” The company’s affiliation with Georgia Tech will give it access to top-notch research and technology students and graduates. The cost of doing business in Georgia is also less than it is in Florida, Zeto said.