update composer.json

composer.json

     "name": "mirfalah/laravel-payment",
     "description": "Laravel payment service provider",
     "type": "library",
+    "homepage": "https://git.mirfalah.my/mirfalah-tech/laravel-payment.git",
+    "readme": "README.md",
     "require": {
         "php": ">=7.1",
         "illuminate/support": ">=5.0 <8.0",