Added Usage guide

README.md

@@ -6,9 +6,17 @@ TeleVue is a simple lightweight UI library for [Telegram Web Apps](https://core.
 ## Installation
 You can simply use NPM to install TeleVue package in your Vue project.  
 ```
+yarn add @erfanmola/TeleVue
 npm install @erfanmola/TeleVue
 ```
 
+## Usage  
+Inside your vue projects, you can import any provider/component that you want, but keep in mind that you must import the `style.css` file separately. For example:  
+```
+import { AppearanceProvider, LocaleProvider } from 'tele-vue-lib';
+import 'tele-vue-lib/style.css';
+```
+
 ## Motivation
 Telegram expanded it's field by introducing the WebApps built-in the messenger. Soon after developers started developing their own useful WebApps as Telegram Web Apps, but this introduced the problem of unfitting appearances of most WebApps on Telegram clients, since Telegram supports different themes and color schemes (Dark, Light) on different platforms (Android, iOS, Desktop, etc)