Update README example.

The code example from the documentation's latest version contains some important updates, such as the usage of `NO_PARAMS`. The README should be updated to reflect this.

README.md

@@ -13,45 +13,52 @@ an interface similar to [rust-postgres](https://github.com/sfackler/rust-postgre
 extern crate rusqlite;
 extern crate time;
 
+use rusqlite::types::ToSql;
+use rusqlite::{Connection, NO_PARAMS};
 use time::Timespec;
-use rusqlite::Connection;
 
 #[derive(Debug)]
 struct Person {
     id: i32,
     name: String,
     time_created: Timespec,
-    data: Option<Vec<u8>>
+    data: Option<Vec<u8>>,
 }
 
 fn main() {
     let conn = Connection::open_in_memory().unwrap();
 
-    conn.execute("CREATE TABLE person (
+    conn.execute(
+        "CREATE TABLE person (
                   id              INTEGER PRIMARY KEY,
                   name            TEXT NOT NULL,
                   time_created    TEXT NOT NULL,
                   data            BLOB
-                  )", &[]).unwrap();
+                  )",
+        NO_PARAMS,
+    ).unwrap();
     let me = Person {
         id: 0,
         name: "Steven".to_string(),
         time_created: time::get_time(),
-        data: None
+        data: None,
     };
-    conn.execute("INSERT INTO person (name, time_created, data)
+    conn.execute(
+        "INSERT INTO person (name, time_created, data)
                   VALUES (?1, ?2, ?3)",
-                 &[&me.name, &me.time_created, &me.data]).unwrap();
+        &[&me.name as &ToSql, &me.time_created, &me.data],
+    ).unwrap();
 
-    let mut stmt = conn.prepare("SELECT id, name, time_created, data FROM person").unwrap();
-    let person_iter = stmt.query_map(&[], |row| {
-        Person {
+    let mut stmt = conn
+        .prepare("SELECT id, name, time_created, data FROM person")
+        .unwrap();
+    let person_iter = stmt
+        .query_map(NO_PARAMS, |row| Person {
             id: row.get(0),
             name: row.get(1),
             time_created: row.get(2),
-            data: row.get(3)
-        }
-    }).unwrap();
+            data: row.get(3),
+        }).unwrap();
 
     for person in person_iter {
         println!("Found person {:?}", person.unwrap());