Update README.md

Author: imrealashu

README.md

@@ -10,7 +10,7 @@
 Two Factor Authentication or 2-Step Verification provides stronger security for your Account by requiring a second step of verification when you sign in. In addition to your password, you’ll also need a code generated by the Google Authenticator app on your phone. This package implements TOTP defined in [RFC 6238](https://tools.ietf.org/html/rfc6238)
 
 ## Requirements
-  - PHP >= 7.0
+  - PHP >= 7.1
   - Laravel >= 5.3
   - Google Authenticator [Android](https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2&hl=en) - [iOS](https://itunes.apple.com/in/app/google-authenticator/id388497605?mt=8) (Recommended) or [Authy](https://www.authy.com/) mobile app
 
@@ -22,6 +22,7 @@ Note: Current implementation is buggy using Authy as Google Authenticator uses S
 ```bash
 $ composer require thecodework/two-factor-authentication
 ```
+*Note* - If your're using Laravel 5.5 or newer version then auto-discovery-pacakge would automatically update the providers and you could skip to **Step 3**  
 
 **2. Add Service Provider**