Read for later doesn't make sense
Add tracking library
Add promise polyfill
Merge pull request #67 from Financial-Times/add-promise-polyfill

Add promise polyfill
Merge pull request #66 from Financial-Times/page-tracking

Add tracking library
Merge remote-tracking branch 'origin' into restructure

* origin:
  Add promise polyfill
  Add tracking library
  Read for later doesn't make sense