Accept multiple middlewares in app.get

[kevva]

Forgot to implement this in my previous PR:s.

[kevva]

So we can do:

app.get = (path, ...fns)  =>{
	for (const fn of fns) {
		get(path, send(fn));
	}
};

[coveralls]

Coverage remained the same at 100.0% when pulling d507a32 on kevva:multiple-middleware into 5788767 on lukechilds:master.

[lukechilds]

Good catch, totally missed that too.