Remove unwrap from examples

README.md

@@ -11,7 +11,7 @@ an interface similar to [rust-postgres](https://github.com/sfackler/rust-postgre
 
 ```rust
 use rusqlite::types::ToSql;
-use rusqlite::{Connection, NO_PARAMS};
+use rusqlite::{Connection, Result, NO_PARAMS};
 use time::Timespec;
 
 #[derive(Debug)]
@@ -22,8 +22,8 @@ struct Person {
     data: Option<Vec<u8>>,
 }
 
-fn main() {
-    let conn = Connection::open_in_memory().unwrap();
+fn main() -> Result<()> {
+    let conn = Connection::open_in_memory()?;
 
     conn.execute(
         "CREATE TABLE person (
@@ -33,7 +33,7 @@ fn main() {
                   data            BLOB
                   )",
         NO_PARAMS,
-    ).unwrap();
+    )?;
     let me = Person {
         id: 0,
         name: "Steven".to_string(),
@@ -44,22 +44,22 @@ fn main() {
         "INSERT INTO person (name, time_created, data)
                   VALUES (?1, ?2, ?3)",
         &[&me.name as &ToSql, &me.time_created, &me.data],
-    ).unwrap();
+    )?;
 
     let mut stmt = conn
-        .prepare("SELECT id, name, time_created, data FROM person")
-        .unwrap();
+        .prepare("SELECT id, name, time_created, data FROM person")?;
     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();
+        })?;
 
     for person in person_iter {
         println!("Found person {:?}", person.unwrap());
     }
+    Ok(())
 }
 ```