fix(dropdowns): add repository to package

Author: viceice

controls/dropdowns/package.json

@@ -55,9 +55,13 @@
 		"ej2-multiselect",
 		"ej2-combobox"
 	],
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/syncfusion/ej2-javascript-ui-controls"
+	},
 	"scripts": {
 		"build": "gulp build",
 		"test": "gulp test"
 	},
 	"typings": "index.d.ts"
-}
+}