fix(doc): Fiw README syntax for 0.9 (fixes #333)

README.md

@@ -46,27 +46,29 @@ lettre_email = "0.9"
 ```rust,no_run
 extern crate lettre;
 extern crate lettre_email;
+extern crate mime;
 
-use lettre::{EmailTransport, SmtpTransport};
-use lettre_email::EmailBuilder;
+use lettre::{SmtpClient, Transport};
+use lettre_email::Email;
 use std::path::Path;
 
 fn main() {
-    let email = EmailBuilder::new()
+    let email = Email::builder()
         // Addresses can be specified by the tuple (email, alias)
         .to(("user@example.org", "Firstname Lastname"))
         // ... or by an address only
         .from("user@example.com")
         .subject("Hi, Hello world")
         .text("Hello world.")
+        .attachment_from_file(Path::new("Cargo.toml"), None, &mime::TEXT_PLAIN)
+        .unwrap()
         .build()
         .unwrap();
 
     // Open a local connection on port 25
-    let mut mailer = SmtpTransport::builder_unencrypted_localhost().unwrap()
-                                                                   .build();
+    let mut mailer = SmtpClient::new_unencrypted_localhost().unwrap().transport();
     // Send the email
-    let result = mailer.send(&email);
+    let result = mailer.send(email.into());
 
     if result.is_ok() {
         println!("Email sent");