add aplha.2 compatible example for module mode

examples/example1/main.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	_ "modernc.org/sqlite"
+)
+
+func main() {
+	if err := main1(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func main1() error {
+	dir, err := ioutil.TempDir("", "test-")
+	if err != nil {
+		return err
+	}
+
+	defer os.RemoveAll(dir)
+
+	fn := filepath.Join(dir, "db")
+
+	db, err := sql.Open("sqlite", fn)
+	if err != nil {
+		return err
+	}
+
+	if _, err := db.Exec("create table if not exists t(i);"); err != nil {
+		return err
+	}
+
+	if err := db.Close(); err != nil {
+		return err
+	}
+
+	fi, err := os.Stat(fn)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("%s size: %v\n", fn, fi.Size())
+	return nil
+}