fix(ftp deploy): remove files from server before upload

deploy.js

@@ -13,7 +13,7 @@ var config = {
     // e.g. exclude sourcemaps, and ALL files in node_modules (including dot files)
     exclude: ["dist/**/*.map", "node_modules/**", "node_modules/**/.*", ".git/**"],
     // delete ALL existing files at destination before uploading, if true
-    deleteRemote: false,
+    deleteRemote: true,
     // Passive mode is forced (EPSV command is not sent)
     forcePasv: true
 };