content: add survey2016-results article

Change-Id: I1b524e4ab686dffeb0f0d1af68f4c127eedb3aac
Reviewed-on: https://go-review.googlesource.com/37723
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
45 files changed