Update to comply with major release version 2

README.dev.md

@@ -11,3 +11,5 @@
 * Tag the release: `git tag -a v1.2.3 -m 'Tag v1.2.3'`.
 * Push the tag: `git push origin v1.2.3`.
 * Run `goreleaser`
+
+NOTE: if a major version release is happening, it's necessary to update the `go.mod` file, as well as the import of internal packages according to the new major version (see more on [releasing modules v2 or higher](https://github.com/golang/go/wiki/Modules#releasing-modules-v2-or-higher))

README.md

@@ -29,9 +29,9 @@ archive. Inside is the `mm-geofeed-verifier` binary.
 You need the Go compiler (Go 1.12+). You can get it at the [Go
 website](https://golang.org).
 
-The easiest way is via `go get`:
+The easiest way is via `go install`:
 
-    $ go get -u github.com/maxmind/mm-geofeed-verifier
+    $ go install github.com/maxmind/mm-geofeed-verifier/v2@latest
 
 The program will be installed to `$GOPATH/bin/mm-geofeed-verifier`.
 

go.mod

@@ -1,4 +1,4 @@
-module github.com/maxmind/mm-geofeed-verifier
+module github.com/maxmind/mm-geofeed-verifier/v2
 
 go 1.18
 

main.go

@@ -19,7 +19,7 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/maxmind/mm-geofeed-verifier/verify"
+	"github.com/maxmind/mm-geofeed-verifier/v2/verify"
 )
 
 const version = "2.2.1"

main_test.go

@@ -7,7 +7,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	"github.com/maxmind/mm-geofeed-verifier/verify"
+	"github.com/maxmind/mm-geofeed-verifier/v2/verify"
 )
 
 type parseFlagsCorrectTest struct {