Source: http://icarus4.logdown.com/posts/175092-nodejs-installation-guide
1. Install NVM (Node.js Version Manager)
1.1. Add "source $(brew --prefix nvm)/nvm.sh" to ~/.bash_profile
1.2. Source ~/.bash_profile
2. Install Node.js
2.1. List available versions by "nvm ls-remote"
2.2. Install the LTS by "nvm install v6.9.2"
Node.js directory: /usr/local/opt/nvm/versions/node/vX.X.X
Installed versions: nvm ls
Current in use version: nvm -v
To switch version: nvm use vX.X.X (only valid for current shell). To fix it, set it as default version to use: nvm alias default vX.X.X
