Improve directory structure

api/coins/coins.js → api/coins.js

@@ -1,5 +1,5 @@
 const fetch = require('isomorphic-fetch');
-const sendJson = require('../send-json');
+const sendJson = require('./util/send-json');
 
 const getData = async endpoint => fetch(
 	`https://whattomine.com/${endpoint}.json`

api/data/data.js → api/data.js

@@ -1,7 +1,6 @@
-const sendJson = require('../send-json');
-
-const getNiceHashData = require('../nicehash/nicehash');
-const getCoinData = require('../coins/coins');
+const sendJson = require('./util/send-json');
+const getNiceHashData = require('./nicehash');
+const getCoinData = require('./coins');
 
 const getData = async () => {
 	const [nicehashAlgorithms, coins] = await Promise.all([

api/nicehash/nicehash.js → api/nicehash.js

@@ -1,5 +1,5 @@
 const fetch = require('isomorphic-fetch');
-const sendJson = require('../send-json');
+const sendJson = require('./util/send-json');
 
 const SECONDS = 1;
 const MINUTES = SECONDS * 60;