How to install twitter kit using fabric plugin in android studio

Twitter sold Fabric to Google. A number of changes will occur in Fabric, because of this. One of them is that they removed Twitterkit from Fabric. You can still install it, however not via Fabric. Here you can find the Twitter kit documentation

You will also have to update your applications with TwitterKit build in. It is all explained in this blogpost. They sent an email to the admin of your Fabrics organization account.