Add golint

.travis.yml

@@ -1,17 +1,32 @@
 language: go
+
 go: 
-  - 1.11
+  - 1.12
+
 env:
   global:
     - PATH=/home/travis/gopath/bin:$PATH
     # docker credentials
     - secure: "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"
     - secure: "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"
     - COMMIT=${TRAVIS_COMMIT::8}
+
+notifications:
+  email:
+    on_success: never
+    on_failure: change
+
+before_install:
+  # Install linters and misspell
+  - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b $GOPATH/bin v1.15.0
+  - golangci-lint --version
+
 before_script:
   - export GO111MODULE=on
+
 script:
   - go build -o gravo *.go
+
 after_success:
   - docker login -u $DOCKER_USER -p $DOCKER_PASS
   - export REPO=andig/gravo

api.go

@@ -90,7 +90,7 @@ func (api *Api) get(endpoint string) (io.Reader, error) {
 	}
 	defer resp.Body.Close() // close body after checking for error
 
-	duration := time.Now().Sub(start)
+	duration := time.Since(start)
 	log.Printf("GET %s (%dms)", url, duration.Nanoseconds()/1e6)
 
 	// read body

go.mod

@@ -1 +1,3 @@
 module github.com/andig/gravo
+
+go 1.12

handler.go

@@ -51,7 +51,7 @@ func logger(f http.HandlerFunc, debug bool) http.HandlerFunc {
 
 		f(w, r)
 
-		duration := time.Now().Sub(start)
+		duration := time.Since(start)
 		log.Printf("%v %v (%dms)", r.Method, r.URL.Path, duration.Nanoseconds()/1e6)
 
 		if debug {