language: go
go:
    - 1.6
    - 1.7
    - 1.8
sudo: false
os:
    - linux
    - osx
script:
    make travis
language: go
go:
    - 1.6
    - 1.7
    - 1.8
    - 1.9
sudo: false
os:
    - linux
    - osx
script:
    make travis

Add go 1.9 to test matrix.
Add go 1.9 to test matrix.
