Added some examples.

example_test.go

@@ -9,8 +9,71 @@ import (
 func ExampleOpen() {
 	db, err := sqlite.Open(":memory:")
 	if err != nil {
-		// ...
+		panic(err)
 	}
 	defer db.Close()
 	fmt.Printf("%d\n", db.TotalChanges())
 }
+
+// <nil>
+func ExampleExec() {
+	db, _ := sqlite.Open(":memory:")
+	defer db.Close()
+	err := db.Exec("CREATE TABLE test(id INTEGER PRIMARY KEY NOT NULL, name TEXT NOT NULL)")
+	fmt.Println(err)
+}
+
+// true <nil>
+func ExamplePrepare() {
+	db, _ := sqlite.Open(":memory:")
+	defer db.Close()
+	stmt, err := db.Prepare("SELECT 1 where 1 = ?", 1)
+	if err != nil {
+		panic(err)
+	}
+	defer stmt.Finalize()
+	fmt.Println(stmt.Next())
+}
+
+// OK
+func ExampleNext() {
+	db, _ := sqlite.Open(":memory:")
+	defer db.Close()
+	stmt, err := db.Prepare("SELECT 1, 'test'")
+	defer stmt.Finalize()
+	var ok bool
+	for ok, err = stmt.Next(); ok; ok, err = stmt.Next() {
+		fmt.Println("OK")
+	}
+	if err != nil {
+		panic(err)
+	}
+}
+
+// 1 test
+func ExampleScan() {
+	db, _ := sqlite.Open(":memory:")
+	defer db.Close()
+	stmt, _ := db.Prepare("SELECT 1, 'test'")
+	defer stmt.Finalize()
+	var id int
+	var name string
+	for sqlite.Must(stmt.Next()) {
+		stmt.Scan(&id, &name)
+		fmt.Println(id, name)
+	}
+}
+
+// 1 test
+func ExampleNamedScan() {
+	db, _ := sqlite.Open(":memory:")
+	defer db.Close()
+	stmt, _ := db.Prepare("SELECT 1 as id, 'test' as name")
+	defer stmt.Finalize()
+	var id int
+	var name string
+	for sqlite.Must(stmt.Next()) {
+		stmt.NamedScan("name", &name, "id", &id)
+		fmt.Println(id, name)
+	}
+}