add goreportcard report

Author: mmadfox

README.md

@@ -2,6 +2,7 @@
 
 [![Documentation](https://godoc.org/github.com/mmadfox/go-h3geo-dist?status.svg)](https://pkg.go.dev/github.com/mmadfox/go-h3geo-dist)
 [![Coverage Status](https://coveralls.io/repos/github/mmadfox/go-h3geo-dist/badge.svg?branch=main)](https://coveralls.io/github/mmadfox/go-h3geo-dist?branch=main&1)
+[![Go Report Card](https://goreportcard.com/badge/github.com/mmadfox/go-h3geo-dist)](https://goreportcard.com/report/github.com/mmadfox/go-h3geo-dist)
 
 Distribution of [Uber H3geo](https://h3geo.org/) cells by nodes 
 

go.mod

@@ -1,5 +1,5 @@
 module github.com/mmadfox/go-h3geo-dist
 
-go 1.17
+go 1.18
 
 require github.com/uber/h3-go/v3 v3.7.1 // indirect