The lait plugins to use with DNF package manager. The plugin is similar to yaourt, direct download the spec and building src.rpms locally and installing the binary .rpms.
From the Lait git checkout directory:
$ mkdir build
$ pushd build
$ cmake .. && make
$ sudo make install
Then to run Lait:
$ lait --help-cmd
$ lait add-repo https://github.com/FZUG/repo
$ lait search <name>
$ lait install <pkg...>
$ lait remove <pkg...>