As per the title.....
Within the zip file is a PDF explaining what to do (+ with pictures ... )
There is the UCCNC.XML file which you need to copy and paste into the: C:\Program Files (x86)\Notepad++\plugins\APIs folder.
Then there is the UCCNC Style.XML file which you will need import via the Languages + User Defined Languages.
Also I'd recommend that you change the Settings >> Style Configurator to Deep Black Theme or change the Styles
256kB file limit! ... googledrive link below:
https://drive.google.com/open?id=0B9eqGqWQVBbWZHJKbFZZNDl6OEE