Add github.com/golang/deps command to deps.go
Add github.com/golang/deps command to deps.go

README says "abcweb deps -u" but it doesn't fetch golang/deps and running "abcweb new" without deps throws the following error.

Error: could not find "dep" dependency in $PATH. Please run "abcweb deps" to install all missing dependencies.

Just updating the file to add golang/deps
volatiletech/abcweb,volatiletech/abcweb