docs: README.md updated

Author: mitulgolakiya

README.md

@@ -2,4 +2,12 @@
 
 This repo contains common helper functions which are used in different InfyOm laravel generator packages.
 
-This can be useful to other packages as well.
+This can be useful to other packages as well.
+
+## Installation
+
+`composer require infyomlabs/laravel-generator-helpers`
+
+For Laravel 6,
+
+`composer require infyomlabs/laravel-generator-helpers:^1.0`