Create scanner.go

a program in GoLang to scan camera vendor's DDNS service for active IPs created with Victor Agababov during a Go lesson he gave me. After 2 pitchers of beer it worked, after 30 hours we got complete list of resolved ip:port pairs that run a camera.
Merge remote-tracking branch 'upstream/master'
Merge pull request #3 from shekyan/master

scanner.go