Install the generator and Yeoman
npm install -g generator-keystone
npm install -g yo
Run the generator via Yeoman
yo keystone
Install mongodb if you don't have it yet
brew install mongodb
Create the data dir for mongo
mkdir -p /data/db
Make the permissions are set properly for the user running mongo
sudo chmod 0755 /data/db && sudo chown $USER /data/db
Run the app locally
node keystone