simple mio example

[lthiery]

I was trying to use this library without all the tokio stuff and wished there was a mio example. I shared back this example, although it's not fancy and doesn't take args.

Plus, there is something funny happening where the first event is non-sense...

[posborne]

Thanks for the example @lthiery; can you run rustfmt on this? I'll give it a once-over as well in more detail.

[mathk]

bors try

[posborne]

@mathk I haven't made my rounds on this repo to enable bors yet but may be doing some of that tomorrow.

[posborne]

This probably needs a rebase to have a better chance with CI.

[mathk]

I guess you need to feature gate your test: #[cfg(feature = "mio-evented")]

[eldruin]

This would need to be adapted to the updated mio version now. bors try

[bors[bot]]

try

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