`proxyData` parameter is not optional in`Client` constructor

[rasikas]

According to your example, Client should be constructed without proxyData

import {Client} from 'fb-messenger-bot-api';
const client = new Client(process.env.PAGE_ACCESS_TOKEN);

However proxyData is not marked as optional so we always have to pass undefined as the second param.
(when using the library in a typescript project)
https://github.com/crisboarna/fb-messenger-bot-api/blob/master/src/client/Client.ts#L39

  public constructor(token: string, proxyData: ProxyData) {
    this.requestData = { token };
    this.requestData = Utils.getProxyData(this.requestData, proxyData);
  }

[crisboarna]

Hey, thank you for pointing it out. I will finish the release today and will publish a new version solving all present issues + suggestions + more.

[crisboarna]

Made proxyData optional in latest version.