Instructions to Instantiate or use Singleton

Author: bmino

README.md

@@ -20,15 +20,27 @@ npm install node-binance-api --save
 
 #### Getting started
 ```javascript
-const Binance = require('node-binance-api');
-const binance = new Binance().options({
+const binance = require('node-binance-api').options({
   APIKEY: '<key>',
   APISECRET: '<secret>',
   useServerTime: true, // If you get timestamp errors, synchronize to server time at startup
   test: true // If you want to use sandbox mode where orders are simulated
 });
 ```
 
+#### Instantiating Multiple Instances
+```javascript
+const Binance = require('node-binance-api');
+
+const instance1 = new Binance().options({
+  // ...
+});
+
+const instance2 = new Binance().options({
+  // ...
+});
+```
+
 #### Getting latest price of a symbol
 ```js
 binance.prices('BNBBTC', (error, ticker) => {