update package info

Author: deyihu

package.json

@@ -7,13 +7,18 @@
   "scripts": {
     "lint": "eslint ./*.js",
     "build": "npm run lint && cross-env NODE_ENV=dev  rollup -c",
+    "dev": "npm run lint && cross-env NODE_ENV=dev  rollup -c -w",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {
     "type": "git",
     "url": "https://github.com/maptalks/maptalks.snap.git"
   },
   "author": "",
+  "files": [
+    "index.js",
+    "dist/"
+  ],
   "license": "MIT",
   "bugs": {
     "url": "https://github.com/maptalks/maptalks.snap/issues"
@@ -34,4 +39,4 @@
     "rollup-plugin-node-resolve": "^3.3.0",
     "rollup-plugin-terser": "^7.0.2"
   }
-}
+}