text: Title: Add favicon to report
  Body: Add favicon to report
  
  How it is now
  ![image](https://user-images.githubusercontent.com/2728804/85605889-fe52ae80-b628-11ea-9367-ac01989552b3.png)
  
  It should have the ScanAPI icon
  
  https://github.com/scanapi/design/blob/master/images/icon-light.png