ultimate-vim/sources_non_forked/vim-notes/INSTALL.md

Please note that the vim-notes plug-in requires my vim-misc plug-in which is separately distributed.

Unzip the most recent ZIP archives of the [vim-notes] download-notes and [vim-misc] download-misc plug-ins inside your Vim profile directory (usually this is ~/.vim on UNIX and %USERPROFILE%\vimfiles on Windows), restart Vim and execute the command :helptags ~/.vim/doc (use :helptags ~\vimfiles\doc instead on Windows).

If you prefer you can also use Pathogen pathogen, Vundle vundle or a similar tool to install & update the [vim-notes] github-notes and [vim-misc] github-misc plug-ins using a local clone of the git repository.