maintner: process a github new issue mutation, start of tests

Change-Id: I92b9d5b8ddce6b48ede67e5d5ec97c1a07d17e06
Reviewed-on: https://go-review.googlesource.com/36901
Reviewed-by: Kevin Burke <kev@inburke.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2 files changed