diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..0352427
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,8 @@
+.gitattributes  export-ignore
+.gitignore      export-ignore
+.travis.yml     export-ignore
+
+Makefile        export-ignore
+
+*.md            export-ignore
+*_test.go       export-ignore
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..414091c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+# code coverage and quality reports
+*.out
diff --git a/README.md b/README.md
index 1c1bc5e..d601b7f 100644
--- a/README.md
+++ b/README.md
@@ -96,7 +96,7 @@ allocates at call stack: 1, detailed call stack:
 
 ## 🧩 Integration
 
-This library uses [SemVer](https://semver.org/) for versioning, and it is not
+The library uses [SemVer](https://semver.org) for versioning, and it is not
 [BC](https://en.wikipedia.org/wiki/Backward_compatibility)-safe through major releases.
 You can use [dep][] or [go modules][gomod] to manage its version.
 
diff --git a/tracer.go b/tracer.go
index a03d52b..a9676be 100644
--- a/tracer.go
+++ b/tracer.go
@@ -16,7 +16,7 @@ type Trace struct {
 // Start creates a call entry and marks its start time.
 //
 //  func Do(ctx context.Context) {
-//  	call := tracer.Fetch(ctx).Start()
+//  	call := tracer.Fetch(ctx).Start("id", "labelX", "labelY")
 //  	defer call.Stop()
 //  }
 //