Update 2016-raleigh.yml
Update 2016-raleigh.yml

adding dates, and removing a sponsor level we aren't going to track

Former-commit-id: b33d1ca0494a48caf8ef2df74357e31f9ab04a7f
masteinhauser/devopsdays-web,benjohnson77/devopsdays-web,masteinhauser/devopsdays-web,joelaha/devopsdays-web,masteinhauser/devopsdays-web,joelaha/devopsdays-web,benjohnson77/devopsdays-web,masteinhauser/devopsdays-web,benjohnson77/devopsdays-web,joelaha/devopsdays-web,joelaha/devopsdays-web,benjohnson77/devopsdays-web