message: chore: update description in package.json
diff: {
  "name": "@teppeis/kintone-plugin-packer",
  - "description": "Package kintone plugin with pure JavaScript",
  + "description": "Package your kintone plugin with pure JavaScript",
  "version": "0.0.1",
  "author": "Teppei Sato <teppeis@gmail.com>",
  "engines": {
  