How do you run the server?

Hello,

I can't figure out how to build this in a way that I later can run it. This is my first Rust thing ever. I have installed `rustup` and it got me `cargo`. I have run `cargo build` and it compiles everything, even if there are some deprecation warnings.

Running `cargo run` gives me:

```
a bin target must be available for `cargo run`
```

I've also tried `cargo build --all-targets` and the tests got my machine really hot, but still the same `cargo run` results.

I checked the video presentation linked in the README and saw the command `cargo run --bin server -- --` used, but it gives me:

```
error: no bin target named `server`
```

I also looked at the Travis file and did the clippy things (w/o having the faintest idea about what I am doing), but same results.

Now I am out of ideas, and love me some clues.

Inizia con il comando video del README e il file Travis, quindi confronta queste istruzioni con i target Cargo disponibili. Il lavoro è completato quando il repository spiega chiaramente se e come è possibile eseguire il server, includendo un comando che corrisponda ai target presenti nel repository.

Scritto dal modello di indicizzazione a partire dal testo della issue.