Let CCXT Read from a credentials.js file

I would like to enable CCXT to read from a credentials.js file when needing exchange credentials instead of having to put the credentials inside the source.

For example, instead of (this is from the instantiate-all-at-once.js example):

"use strict";

const ccxt = require ('../../ccxt');

async function test () {

    let exchanges = { 
        "bittrex": {
            "apiKey": "60f38a5818934fc08308778f94d3d8c4", 
            "secret": "9d294ddb5b944403b58e5298653720c1",
        },
        "bitfinex": { 
            "apiKey": "02YsRDRAFwqt9JXfFKPIEw82mgmNbZtfpwvt8q5WK5a", 
            "secret": "IummLrCfcZ9d9NPEtMg6chCpO8hugCvsDIscNm1F3pE"
        },
    }

    let ids = ccxt.exchanges.filter (id => id in exchanges)

we could do something like:

"use strict";

const ccxt = require ('../../ccxt');
const exchanges = require('credentials.js').credentials;

async function test () {

    let ids = ccxt.exchanges.filter (id => id in exchanges)

[xpl]

@cklester Actually, you can use require to load JSON:

const keys = require ('./keys.json')

[cklester]

That seems to be the way to go… right? 🥇