message: Set koa-body version to 1.6.0.
  Fix koa-body version to 1.6.0 to prevent pulling incompatible version
diff: "concurrently": "^2.0.0",
  "fs-extra": "^0.30.0",
  "koa": "^1.2.0",
  - "koa-body": "",
  + "koa-body": "1.6.0",
  "koa-bodyparser": "^2.0.1",
  "koa-compress": "^1.0.9",
  "koa-cors": "0.0.16",
  