diff --git a/README.md b/README.md
index 39c7acd..74550c8 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
-# bybit-api [![npm version](https://img.shields.io/npm/v/bybit-api.svg)][1] [![npm size](https://img.shields.io/bundlephobia/min/bybit-api.svg)][1] [![npm downloads](https://img.shields.io/npm/dt/bybit-api.svg)][1]
+# bybit-api
+[![npm version](https://img.shields.io/npm/v/bybit-api/latest)][1] [![npm size](https://img.shields.io/bundlephobia/min/bybit-api/latest)][1] [![npm downloads](https://img.shields.io/npm/dt/bybit-api)][1]
+[![last commit](https://img.shields.io/github/last-commit/tiagosiebler/bybit-api)][1]
 [![CodeFactor](https://www.codefactor.io/repository/github/tiagosiebler/bybit-api/badge)](https://www.codefactor.io/repository/github/tiagosiebler/bybit-api)
 
 [1]: https://www.npmjs.com/package/bybit-api
@@ -89,8 +91,7 @@ const ws = new WebsocketClient({key: API_KEY, secret: PRIVATE_KEY}, DefaultLogge
 ## Contributions & Thanks
 ### Donations
 #### pixtron
-This library was started by @pixtron. If this library helps you to trade better on bybit, feel free to donate a coffee to @pixtron or create a bybit account using his [ref link](https://www.bybit.com/app/register?ref=j8q5l).
-
+This library was started by @pixtron. If this library helps you to trade better on bybit, feel free to donate a coffee to @pixtron:
 - BTC `1Fh1158pXXudfM6ZrPJJMR7Y5SgZUz4EdF`
 - ETH `0x21aEdeC53ab7593b77C9558942f0c9E78131e8d7`
 - LTC `LNdHSVtG6UWsriMYLJR3qLdfVNKwJ6GSLF`
@@ -100,7 +101,7 @@ If you found this project interesting or useful, create accounts with my referra
 - [Bybit](https://www.bybit.com/en-US/register?affiliate_id=9410&language=en-US&group_id=0&group_type=1)
 - [Binance](https://www.binance.com/en/register?ref=20983262)
 
-Or feed my coffee addiction using any of these:
+Or buy me a coffee using any of these:
 - BTC: `1C6GWZL1XW3jrjpPTS863XtZiXL1aTK7Jk`
 - ETH (ERC20): `0xd773d8e6a50758e1ada699bb6c4f98bb4abf82da`
 
diff --git a/lib/rest-client.js b/lib/rest-client.js
index 8d5557a..a5d4d6e 100644
--- a/lib/rest-client.js
+++ b/lib/rest-client.js
@@ -4,8 +4,16 @@ const assert = require('assert');
 const RequestWrapper = require('./util/requestWrapper');
 
 module.exports = class RestClient {
-
-  constructor(key, secret, livenet=false, options={}) {
+  /**
+   * @public Creates an instance of the inverse REST API client.
+   *
+   * @param {string} key - your API key
+   * @param {string} secret - your API secret
+   * @param {boolean} [livenet=false]
+   * @param {*} [options={}] options to configure REST API connectivity
+   * @param {*} [requestOptions={}] HTTP networking options for axios
+   */
+  constructor(key, secret, livenet=false, options={}, requestOptions={}) {
     this.request = new RequestWrapper(...arguments);
   }
 
diff --git a/lib/websocket-client.js b/lib/websocket-client.js
index 36aeee8..51e64cc 100644
--- a/lib/websocket-client.js
+++ b/lib/websocket-client.js
@@ -4,7 +4,7 @@ const WebSocket = require('ws');
 
 const defaultLogger = require('./logger');
 const RestClient = require('./rest-client');
-const { signMessage } = require('./util/requestUtils');
+const { signMessage, serializeParams } = require('./util/requestUtils');
 
 const wsUrls = {
   livenet: 'wss://stream.bybit.com/realtime',
@@ -96,11 +96,8 @@ module.exports = class WebsocketClient extends EventEmitter {
       };
 
       params.signature = signMessage('GET/realtime' + params.expires, this.options.secret);
+      return '?' + serializeParams(params);
 
-      return '?' + Object.keys(params)
-        .sort()
-        .map(key => `${key}=${params[key]}`)
-        .join('&');
     } else if (this.options.key || this.options.secret) {
       this.logger.warning('Could not authenticate websocket, either api key or private key missing.', {category: 'bybit-ws'});
     } else {
@@ -112,7 +109,9 @@ module.exports = class WebsocketClient extends EventEmitter {
 
   _reconnect(timeout) {
     this._teardown();
-    if (this.readyState !== READY_STATE_CONNECTING) this.readyState = READY_STATE_RECONNECTING;
+    if (this.readyState !== READY_STATE_CONNECTING) {
+      this.readyState = READY_STATE_RECONNECTING;
+    }
 
     setTimeout(() => {
       this.logger.info('Reconnecting to server', {category: 'bybit-ws'});
@@ -159,7 +158,7 @@ module.exports = class WebsocketClient extends EventEmitter {
   }
 
   _wsMessageHandler(message) {
-    let msg = JSON.parse(message);
+    const msg = JSON.parse(message);
 
     if ('success' in msg) {
       this._handleResponse(msg);
@@ -188,11 +187,14 @@ module.exports = class WebsocketClient extends EventEmitter {
   }
 
   _handleResponse(response) {
-    if (response.request && response.request.op === 'ping' && response.ret_msg === 'pong') {
-      if (response.success === true) {
+    if (
+      response.request &&
+      response.request.op === 'ping' &&
+      response.ret_msg === 'pong' &&
+      response.success === true
+    ) {
         this.logger.silly('pong recieved', {category: 'bybit-ws'});
         clearTimeout(this.pongTimeout);
-      }
     } else {
       this.emit('response', response);
     }
diff --git a/package.json b/package.json
index 09d72cb..8988bbd 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "bybit-api",
-  "version": "1.2.0",
-  "description": "A light node.js wrapper for the Bybit Cryptocurrency Derivative exchange API",
+  "version": "1.2.1",
+  "description": "A node.js wrapper for the Bybit Cryptocurrency Derivative exchange APIs",
   "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
@@ -14,7 +14,13 @@
     "bybit",
     "api",
     "websocket",
-    "rest"
+    "rest",
+    "rest api",
+    "inverse",
+    "nodejs",
+    "trading",
+    "cryptocurrency",
+    "bitcoin"
   ],
   "author": "Stefan Aebischer <os@pixtron.ch> (https://pixtron.ch)",
   "contributors": [