Commnand not found using node 9.4.0 on macos
$ yarn global add lad
yarn global v1.3.2
[1/4] 🔍  Resolving packages...
warning lad@0.0.1: Please email niftylettuce@gmail.com if you'd like to get notified when a stable version of Lad is released.  Thank you
[2/4] 🚚  Fetching packages...
[3/4] 🔗  Linking dependencies...
[4/4] 📃  Building fresh packages...
**warning "lad@0.0.1" has no binaries**
✨  Done in 0.49s.

$ lad
-bash: lad: command not found