Add Go ReportCard

Author: gbarr

README.md

@@ -1,6 +1,7 @@
 # pflag-date #
 [![Go Reference](https://pkg.go.dev/badge/github.com/gbarr/pflag-date.svg)](https://pkg.go.dev/github.com/gbarr/pflag-date)
 [![codecov](https://codecov.io/github/gbarr/pflag-date/graph/badge.svg?token=WCV5JUZHFY)](https://codecov.io/github/gbarr/pflag-date)
+[![Go ReportCard](https://goreportcard.com/badge/gbarr/pflag-date)](http://goreportcard.com/report/gbarr/pflag-date)
 [![golangci-lint](https://github.com/gbarr/pflag-date/actions/workflows/lint.yml/badge.svg)](https://github.com/gbarr/pflag-date/actions/workflows/lint.yml)
 
 [`pflag-date`](https://github.com/gbarr/pflag-date) implements a Golang [`pflag.Value`](https://pkg.go.dev/github.com/spf13/pflag#Value) interface for `YYYY-MM-DD`-specified dates.

example/example.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+
 	pfdate "github.com/gbarr/pflag-date"
 	"github.com/spf13/pflag"
 )
@@ -12,4 +13,3 @@ func main() {
 	pflag.Parse()
 	fmt.Println("date:", dt.String())
 }
-