update composer.json and readme

README.md

   "repositories": [
     {
       "type": "composer",
-      "url": "http://composer.mirfalah.my"
+      "url": "https://composer.mirfalah.my"
     }
   ]
 }

composer.json

     },
     "repositories": [
         {
-            "type": "vcs",
-            "url": "https://git.mirfalah.my/mirfalah-tech/sendmail-swift-transport.git"
+            "type": "composer",
+            "url": "https://composer.mirfalah.my"
         }
     ],
     "extra": {