Respect --token argument on github too

service/github.go

@@ -26,11 +26,17 @@ type GitHub struct {
 
 // Generate returns a GitHub changelog
 func (gh *GitHub) Generate() (string, []Entry, error) {
-	tagURL := fmt.Sprintf("## [%s](https://github.com/%s/releases/tag/%s) - %s", gh.Milestone, gh.Repo, gh.GitTag, time.Now().Format("2006-01-02"))
-
-	client := github.NewClient(httpClient())
 	ctx := context.Background()
 
+	tagURL := fmt.Sprintf("## [%s](https://github.com/%s/releases/tag/%s) - %s", gh.Milestone, gh.Repo, gh.GitTag, time.Now().Format("2006-01-02"))
+	var client *github.Client
+
+	if gh.Token != "" {
+		client = github.NewTokenClient(ctx, gh.Token)
+	} else {
+		client = github.NewClient(httpClient())
+	}
+
 	prs := make([]Entry, 0)
 
 	state := "merged"