Autoprefixer import fix in readme

[stmoreau]

PR for #11

[vpaulo]

this worked for me

import { Config } from '@stencil/core';
import { less } from '@stencil/less';
import { postcss } from '@stencil/postcss';
import autoprefixer from 'autoprefixer';

export const config: Config = {
  namespace: 'IgComponents',
  outputTargets:[
    { type: 'dist' },
    { type: 'docs' },
    {
      type: 'www',
      serviceWorker: null // disable service workers
    }
  ],
  plugins: [
    less({
      injectGlobalPaths: [
        'src/globals/variables.less',
        'src/globals/mixins.less'
      ]
    }),
    postcss({
      plugins: [autoprefixer({ 
        browsers: ['last 3 versions', '> 1%', 'iOS >=7'] 
      })]
    })
  ]
};

[claviska]

Fixed in #20