Merge pull request #181 from tianon/dco

Add DCO and gofmt checking

.travis.yml

@@ -4,5 +4,17 @@ go:
   - 1.3
   - 1.4
 
+# let us have speedy Docker-based Travis workers
+sudo: false
+
+install:
+  - export DOCKER_PATH="${GOPATH%%:*}/src/github.com/docker/docker"
+  - mkdir -pv "$DOCKER_PATH/project/make"
+  - ( cd "$DOCKER_PATH/project/make" && wget -c 'https://raw.githubusercontent.com/docker/docker/master/project/make/'{.validate,validate-dco,validate-gofmt} )
+  - sed -i 's!docker/docker!docker/swarm!' "$DOCKER_PATH/project/make/.validate"
+  - go get -t -v ./...
+
 script:
+ - bash "$DOCKER_PATH/project/make/validate-dco"
+ - bash "$DOCKER_PATH/project/make/validate-gofmt"
  - go test -v ./...