Add "src-git lienol https://github.com/Lienol/openwrt-package" to feeds.conf.default.
./scripts/feeds clean
./scripts/feeds update -a
./scripts/feeds install -a
Or download it yourself and put it in the package folder. make after enjoy...
If you use Luci-19 or higher, Please selected the "luci-compat" and "luci-lib-ipkg" before compile