Update go dependencies

vendor/gopkg.in/gavv/httpexpect.v2/.travis.yml

@@ -0,0 +1,17 @@
+language: go
+sudo: false
+
+go:
+    - 1.12.x
+
+before_install:
+  - go get golang.org/x/tools/cmd/cover
+  - go get github.com/mattn/goveralls
+  - go get github.com/golangci/golangci-lint/cmd/golangci-lint
+
+script:
+  - go get -v -t . ./_examples
+  - go test -coverprofile profile.cov .
+  - go test ./_examples
+  - ${GOPATH}/bin/golangci-lint run ./...
+  - ${GOPATH}/bin/goveralls -coverprofile profile.cov -service=travis-ci