Usage
use Server;
let server = new.unwrap;
let settings = server.settings_builder
.resize
.smart
.build;
let url = settings.to_url;
use thumbor::Server;
let server = Server::new("http://localhost:8888", "my-security-key").unwrap();
let settings = server.settings_builder()
.resize((300, 200))
.smart(true)
.build();
let url = settings.to_url("path/to/my/image.jpg");