When Godwin Ndosi first heard the word “Airbnb,” he said, “Airbnb? Is that the name of a person? Now it’s the way he makes his living. His introduction to the accommodations rental website came a year ago. Ndosi, a 23-year-old from Arusha, Tanzania, runs a safari business. A client had nowhere to stay after his hotel plans fell apart. So Ndosi invited him to spend the night at his pad. When the client saw the…