Adding node v8 and v10 as supported engines

Author: praneshr

package.json

@@ -83,6 +83,6 @@
 		"react-dom": "^15.3.0 || ^16.0.0"
 	},
 	"engines": {
-		"node": "^12"
+		"node": "^12 || ^10 || ^8"
 	}
 }