Fix all security related issues,

[ralic]

1. Fix all current secuity report issues and add auto security fix postinstall in package.json (npm audit fix)
   Install the package by invoking 'npm install ', resolved security issues :
   Before

found 10 vulnerabilities (2 low, 6 moderate, 1 high, 1 critical)
  run `npm audit fix` to fix them, or `npm audit` for details

After

found 0 vulnerabilities

2. Add eslint , using default google's style
3. Upgrade node.js support to the latest (8~13)
4. Remove or adjust dependencies to date.

[houndci-bot]

'console' is not defined.
'const' is available in ES6 (use 'esversion: 6') or Mozilla JS extensions (use moz).