curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash - sudo apt-get install -y nodejs
you may have to re-install the npm package (smartthings-mqtt-bridge), but aside from that, you shouldn't have to reconfigure it.

pm2 script wizard??: https://github.com/dale3h/hassctl Install this
Then run hassctl log -f
this is the new config yaml file: http://pastebin.com/yrVWv9tH
Create another file in the same directory as configuration.yaml, and name it secrets.yaml, and then put this in there (with your own info, of course):
home_latitude: 26.1722
home_longitude: -97.9812

mqtt_broker: 'localhost'
mqtt_port: 1883
mqtt_username: 'your_username'
mqtt_password: 'your_password'

in your config yaml make sure to have:
mqtt:
  broker: !secret mqtt_broker
  port: !secret mqtt_port
  client_id: home-assistant-1
  username: !secret mqtt_username
  password: !secret mqtt_password

check if bridge runs: pm2 list

After you reboot, go to the directory where you have your settings for the smartthings-mqtt-bridge stored, and run:
pm2 start smartthings-mqtt-bridge
pm2 save

if you dont have an mqtt bridge directory create it:
mkdir ~/.mqtt-bridge
cd ~/.mqtt-bridge
nano config.yml

enter the following into the config.yml file in the bridge directory (keep as localhost in my case. make sure localhost is kept in both homeassistant and mqtt files):
mqtt:
    host: mqtt://localhost
    preface: smartthings
    username: your_mqtt_username
    password: your_mqtt_password

port: 8080

in my case i was told to check pm2 logs, then pm2 list, then:
cd ~/.mqtt-bridge
ls -al (to look at the outputs)

on my end it didnt look well so i ran:
pm2 stop smartthings-mqtt-bridge
make sure its stopped: pm2 list
then i had to: pm2 delete smartthings-mqtt-bridge

next i: sudo chown pi:pi config.yml
then:  And then, make sure you stay in that directory (~/.mqtt-bridge) and run: pm2 start smartthings-mqtt-bridge && pm2 logs smartthings-mqtt-bridge

Result: success! working
In my case nodejs was a process found using htop or top that as using 100% CPU. 10 minutes and Pi would crashed.
Solution: sudo apt-get purge nodejs
sudo apt-get install nodejs

result: Success! nodejs is no longer running 100% CPU