blog: add go1.7 post

Change-Id: I750093784ceeadf6a50886eee30031fe95f81240
Reviewed-on: https://go-review.googlesource.com/27053
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1 file changed