language: go
go: 
 - 1.3.3
 - 1.4.2
 - 1.5.1
 - release
 - tip

script:
 - go get github.com/stretchr/testify/assert
 - go test -v ./...

language: go
go: 
 - 1.6.x
 - 1.7.x
 - 1.8.x
 - 1.9.x
 - release
 - tip

script:
 - go get github.com/stretchr/testify/assert
 - go test -v ./...

Update Travis to use more up-to-date versions of Go.
TWEAK: Update Travis to use more up-to-date versions of Go.
