Add travis

.travis.yml

@@ -0,0 +1,41 @@
+# use the latest ubuntu environment (18.04) available on travis
+dist: bionic
+
+language: go
+
+# Force-enable Go modules. Also force go to use the code in vendor/
+# The first two envs will be unnecessary when Go 1.14 lands.
+# LINTER_VERSION is the version of golangci-lint. See current releases
+# here:
+#   https://github.com/golangci/golangci-lint/releases
+env: GO111MODULE=on GOFLAGS='-mod vendor'
+
+# You don't need to test on very old versions of the Go compiler. It's the user's
+# responsibility to keep their compiler up to date.
+go:
+  - 1.13.x
+
+# Only clone the most recent commit.
+git:
+  depth: 1
+
+# Skip the install step. Don't `go get` dependencies. Only build with the code
+# in vendor/
+install: true
+
+# Don't email me the results of the test runs.
+notifications:
+  email: false
+
+# Anything in before_script that returns a nonzero exit code will flunk the
+# build and immediately stop. It's sorta like having set -e enabled in bash.
+# We can download and extract the golangci-lint binary in one (long) command.
+before_script:
+  - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $GOPATH/bin v1.23.1
+
+# script always runs to completion (set +e). If we have linter issues AND a
+# failing test, we want to see both. Configure golangci-lint with a
+# .golangci.yml file at the top level of your repo.
+script:
+  - golangci-lint run       # run a bunch of code checkers/linters in parallel
+  - go test -v -race ./...  # Run all the tests with the race detector enabled