Download the Unity Analytics SDK v1.9.5 (last updated on September 28, 2015) as a Unity package on the Unity Asset Store or download here:
Download from the Analytics Dashboard
To import the downloaded package, go to the Unity Editor and select:
Locate the downloaded SDK package. With the SDK package selected, click “Open”. Leave all the files checked and click Import.
If the import is successful, you should see the Unity Analytics assets in the Project view panel.