To install the LUTs into Adobe Premiere Pro CC Lumetri « Creative » panel, follow the 2-STEPS instructions.

Important : On Mac, do right-click on « Adobe Premiere Pro CC 2015.app » and choose « Show package content » to have access to the folders.

1) Move .look files to :
- Mac : /Applications/Adobe Premiere Pro CC 2015/Adobe Premiere Pro CC 2015.app/Contents/Lumetri/Looks/Cine Looks
- PC : C:\Program Files\Adobe\Adobe Premiere Pro CC 2015\Lumetri\Looks\Cine Looks

2) Move .cube files to :
- Mac : /Applications/Adobe Premiere Pro CC 2015/Adobe Premiere Pro CC 2015.app/Contents/Lumetri/LUTs/Creative
- PC : C:\Program Files\Adobe\Adobe Premiere Pro CC 2015\Lumetri\LUTs\Creative

If you want to install the LUTs into the « Basic Correction » section of the Lumetri panel,
just place the .CUBE files into :
- Mac : /Applications/Adobe Premiere Pro CC 2015/Adobe Premiere Pro CC 2015.app/Contents/Lumetri/LUTs/Technical
- PC : C:\Program Files\Adobe\Adobe Premiere Pro CC 2015\Lumetri\LUTs\Technical

In the latest version of Premiere Pro CC 2015.3 (Adobe update 6/20/2016) you don’t need
anymore to use the .LOOK files, just place the .CUBE files as explained in step 2 above :)

Done :)