Update proxy settings to use dashed in params

[adriaandotcom]

While this was not working:

  const bs_local_args = {
    key: "***",
    localIdentifier: "testing",

    // Never proceeds with the following settings:
    proxyHost: "localhost",
    proxyPort: PORT,

    // If I omit the folder with the proxy settings it returns "LocalError: No output received"
    // f: "/Users/adriaan/folder"
  };

This is:

const bs_local_args = {
    key: "***",
    localIdentifier: "testing",
    forceLocal: "true",

    // update here
    'local-proxy-host': "localhost",
    'local-proxy-port': PORT,

    f: "/Users/adriaan/folder"
  };

So I updated the docs to reflect this.

Related issue: #100 (comment)