Add an illustrative example

examples/workflow.rs

@@ -0,0 +1,28 @@
+extern crate sqlite;
+
+use std::path::PathBuf;
+
+fn main() {
+    let path = setup();
+    let mut database = sqlite::open(&path).unwrap();
+
+    database.execute(r#"
+        CREATE TABLE `users` (id INTEGER, name VARCHAR(255));
+        INSERT INTO `users` (id, name) VALUES (1, 'Alice');
+    "#, None).unwrap();
+
+    database.execute("SELECT * FROM `users`;", Some(&mut |pairs| -> bool {
+        for (ref column, ref value) in pairs {
+            println!("{} = {}", column, value);
+        }
+        true
+    })).unwrap();
+}
+
+fn setup() -> PathBuf {
+    let path = PathBuf::from("database.sqlite3");
+    if std::fs::metadata(&path).is_ok() {
+        std::fs::remove_file(&path).unwrap();
+    }
+    path
+}