Update README.md

Author: onurkerimov

README.md

@@ -24,12 +24,12 @@ A date library agnostic React component for choosing dates and date ranges. Uses
 ### Installation
 
 ```
-yarn add react-date-range
+npm install --save react-date-range
 ```
+This plugin expects `react` and `date-fns` as peerDependencies, It means that you need to install them in your project folder.
 
-If you don't use yarn
 ```
-npm install --save react-date-range
+npm install --save react date-fns
 ```
 
 ## Usage