Implement certificate creation

examples/cert/cert.go

@@ -0,0 +1,22 @@
+// +build example
+
+package main
+
+import (
+	"log"
+
+	"git.sr.ht/~adnano/go-gemini"
+)
+
+func main() {
+	host := "localhost"
+
+	crt, key, err := gemini.NewCertificate(host)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if err := gemini.WriteCertificate(host, crt, key); err != nil {
+		log.Fatal(err)
+	}
+}