grantseltzer: add main.go for Gophercon

Change-Id: I00dd1d941d28682d33db888f9997fade686e3e93
Signed-off-by: grantseltzer <grantseltzer@gmail.com>
Reviewed-on: https://go-review.googlesource.com/48781
Reviewed-by: Jessica Frazelle <me@jessfraz.com>
1 file changed