unable to setup levelui #54

after npm install command output was successfull

Release/leveldown.node
make: Leaving directory '/home/ravi/Desktop/levelui-master/node_modules/leveldown/build'
electron-prebuilt@0.28.3 postinstall /home/ravi/Desktop/levelui-master/node_modules/electron-prebuilt
node install.js

npm notice created a lockfile as package-lock.json. You should commit this file.
added 320 packages from 681 contributors in

following highlighted directory is not getting created.node_modules/level/node_modules/leveldown.

Already tried reinstalling npm still getting same
os : ubuntu 17.04 VM