Autoprefixer settings, based on Bootstrap 3

autoprefixer.js

'use strict';

module.exports = {
  
  options: {
    browsers: [
      'Android 2.3',
      'Android >= 4',
      'Chrome >= 20',
      'Firefox >= 24', // Firefox 24 is the latest ESR
      'Explorer >= 8',
      'iOS >= 6',
      'Opera >= 12',
      'Safari >= 6'
    ]
  },
  dev: {
    options: {
      map: true
    },
    src: [
      '<%= paths.dist %>/css/<%= pkg.name %>.css',
      '<%= paths.dist %>/css/admin.css'
    ]
  }
  
};