senekis: add main.go for Gophercon
senekis: add main.go for Gophercon

Change-Id: I4edd26e590dac712329b9db00e38d09214b46f25
Reviewed-on: https://go-review.googlesource.com/48783
Reviewed-by: Kevin Burke <685caccd7011cfe58b8f9ef79ff9dca388f03c79@inburke.com>

golang/scratch