• Reads workbox-config and checks whether service-worker file is generated or not
• Number of pre-cached assets

• fix loader/disabled state
• bind(this) for this.init in backend callback

• Change button text to Installing workbox
• White border for unchecked

Show the JSON configuration as the user answers the questions
so first question, shows globDirectory being filled

Returns whether there's a workbox configuration or not

if there's a configuration, then we'll query another endpoint to show stats about workbox & service worker.
if there's no configuration, then we'll show a button that can start the generator

Also returns whether workbox is installed in project or not (#2)

this was broken when the questionnaire p was changed to bold

When #1 returns false (as in there's no workbox configuration already)

Sample workbox configuration that we're aiming for:

module.exports = {
  "globDirectory": "build/default",
  "globPatterns": [
  "**/*.{html,js,png,xml,ico,svg,json}",
  ],
  "globIgnores": [
  "bower_components/**"
  ],
  "swDest": "build/default/service-worker.js"
};

1. Ask for globDirectory & suggest default
2. Ask for globPatterns (independent from previous answer)
3. Check for common globIgnores in globDirectory (depends on 1.)
4. Suggest swDest based on globDirectory (depends on 1.)
5. Pass data to api and generate configuration + create workbox-config.js

Easiest option: list it as a peer dependency
Fancier option: check if it's installed, and automatically install it on init if it's not