nodemon在node v6下bug已修复，请重新安装最新版本

原因是mac下的fsevent使用了弃用的原生api

Node.js v6: v8::ObjectTemplate::Set() with non-primitive values is deprecated #473

See [0] and [1]: starting with node.js v6, setting non-primitive values
on FunctionTemplate and ObjectTemplate instances is discouraged; v7 will
downright disallow it. Update the code base.

[0] nodejs/node#6216
[1] nodejs/node#6228

Refs: #127

然后把依赖fsevent的chokidar更新到最新

https://github.com/paulmillr/chokidar

升级一下版本就好了

备注 chokidar是非常有用的，A neat wrapper around node.js fs.watch / fs.watchFile / fsevents.

     "semantic-release": "4.3.5"
    },
    "dependencies": {
 -    "chokidar": "^1.2.0",
 +    "chokidar": "^1.4.3",
      "debug": "^2.2.0",
      "es6-promise": "^3.0.2",
      "ignore-by-default": "^1.0.0",

https://github.com/remy/nodemon/issues/824#issuecomment-215821222