update installation details

README.md

@@ -26,7 +26,9 @@ $ npm run build
 ## Install package.
 
 ```bash
-$ npm install https://git.links123.net/links123.com/video_player.git --save
+$ npm install git+https://git.links123.net/links123.com/video_player.git --save
+
+$ yarn add git+https://git.links123.net/links123.com/video_player.git
 ```
 
 ## Usage