add QuickBlox examples - chatJS, chatBotJS

Author: andriy-avryata

.idea/.gitignore

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+# Overview
+QuickBlox JS Sample Chat
+
+This is a code sample for [QuickBlox](http://quickblox.com/) platform. It is a great way for developers using QuickBlox platform to learn how to integrate private and group chat, add text and image attachments sending into your application.
+
+# Features
+* Log in/log out
+* Send and receive message/attachment
+* Create and leave a 1-to-1 and group chat
+* Create a public chat
+* Display users who have received/read the message
+* Mark messages as read/delivered
+* Send typing indicators
+* List and delete chats
+* Display chat history
+* Display a list with chat participants
+
+# Get application credentials
+[](#get-application-credentials)
+
+QuickBlox application includes everything that brings messaging right
+into your application - chat, video calling, users, push notifications,
+etc. To create a QuickBlox application, follow the steps below:
+
+1.  Register a new account following [this
+    link](https://admin.quickblox.com/signup). Type in your email and
+    password to sign in. You can also sign in with your Google or Github
+    accounts.
+2.  Create the app clicking **New app** button.
+3.  Configure the app. Type in the information about your organization
+    into corresponding fields and click **Add** button.
+4.  Go to **Dashboard =\> *YOUR\_APP* =\> Overview** section and copy
+    your **Application ID**, **Authorization Key**, **Authorization
+    Secret**, and **Account Key**.
+
+# Run chat sample
+
+To run a code sample, follow the steps below:
+
+1.  Download the code sample.
+2.  [Get application credentials](#get-application-credentials) and get appId, authKey, authSecret, and accountKey.
+3.  Put these values in file **QBconfig.js** following **samples =\>
+    chat =\> js** directory.
+
+    JavaScript
+    
+        var QBconfig = {
+          credentials: {
+            appId: '',
+            authKey: '',
+            authSecret: '',
+            accountKey: ''
+          }
+        }
+
+4.  Run the code sample by opening **index.html** file.
+
+# Requirements
+[](#requirements)
+
+The minimum requirements for QuickBlox JavaScript SDK are:
+
+-   JavaScript es5.
+
+# Documentation
+
+Sample documentation is available [here](https://quickblox.com/developers/Web_XMPP_Chat_Sample#Guide:_Getting_Started_with_Chat_API).