gulp 配置 autoprefixer 报出警告问题

今天在配置gulp  autoprefixer  控制台 出现了警告问题，

  Replace Autoprefixer browsers option to Browserslist config.
  Use browserslist key in package.json or .browserslistrc file.

  Using browsers option cause some error. Browserslist config 
  can be used for Babel, Autoprefixer, postcss-normalize and other tools.

  If you really need to use option, rename it to overrideBrowserslist.

  Learn more at:
  https://github.com/browserslist/browserslist#readme
  https://twitter.com/browserslist

对代码没啥影响，就是有强迫症的我看着不爽

 后面在网上查到了解决方案：

原因是版本高了，引用有修改

//更改前    
var processors = [
        autoprefixer({
            browsers: [
                "Android 4.1",
                "iOS 7.1",
                "Chrome > 31",
                "ff > 31",
                "ie >= 8"
            ],
            grid: true   
        })
    ]

//更改后
    var processors = [
        autoprefixer({
            overrideBrowserslist: [
                "Android 4.1",
                "iOS 7.1",
                "Chrome > 31",
                "ff > 31",
                "ie >= 8"
            ],
            grid: true   
        })
    ]

处理问题地址：https://github.com/ng-packagr/ng-packagr/issues/1310