Add travis-cargo to master

.travis.yml

@@ -1,4 +1,19 @@
 language: rust
+sudo: required
 
 rust:
   - nightly
+before_script:
+  - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH
+script:
+  - |
+      travis-cargo build &&
+      travis-cargo test &&
+      travis-cargo doc
+after_success:
+  - travis-cargo doc-upload
+  - travis-cargo coveralls
+
+env:
+  global:
+    secure: m8BXCWDfBh0Hkajp7+KdSFP65q3gUuJWJSb+W6BtAzWNxIuAwTgtm3Ja3gwwlko+XSOO4IG8+p+ApnduK1znWO+mslhUC7qr8oxIWRS3CzvSr3YeEwfVbWOz34/+I5cGh91ie8pbqxP+buMPVj078W3Cr/STzHhS2ZdQpjR/L8c=

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "smtp"
-version = "0.0.11"
+version = "0.0.12"
 description = "Simple SMTP client"
 readme = "README.md"
 documentation = "http://amousset.github.io/rust-smtp/smtp/"

examples/client.rs

@@ -12,8 +12,6 @@ extern crate log;
 extern crate env_logger;
 extern crate smtp;
 
-use std::net::TcpStream;
-
 use smtp::sender::{Sender, SenderBuilder};
 use smtp::mailer::EmailBuilder;