async/await usage

[thebleucheese]

Just in case anyone's using this and trying to run in modern Node, the callbacks aren't standard so promisify requires some work to get it behaving.

Not perfect but it's a start if you're trying to reuse connect style middleware with direct calls in something like a cron.

    require('run-middleware')(server);

    server.runMiddleware[util.promisify.custom] = (path, options) => {
        return new Promise((resolve, reject) => {
            server.runMiddleware(path, options, function (code,data,headers) {
                let payload = {code: code, data: data, headers: headers};
                resolve(payload);
            });
        });
    };

    const runMiddlewarePromise = util.promisify(server.runMiddleware);

    const runMiddlewareAsync = async (path, options) => {
        try {
            const middlewareRes = await runMiddlewarePromise(path, options);
            return middlewareRes;
        } catch(e) {
            console.error("NOT IMPLEMENTED: ", e);
            return false;
        }
    };

    // ======= Execute with the following ==============
    let resTest = await runMiddlewareAsync('/my/url',{
                    secure: true,
                    connection: {},
                    method:'GET'                    
                });

    console.log("res Test: ", resTest);

[Aminadav]

Thanks. Can you create a pull request?

[kaansoral]

Ultimately it makes more sense to just use node-fetch if your use case is for emulation, ends up being simpler