$ heroku plugins:install heroku-cli-ember-fastboot
heroku-cli: Installing core plugins... done
Installing plugin heroku-cli-ember-fastboot...
 ▸    Error installing package.
 ▸    npm ERR! Darwin 15.2.0
 ▸    npm ERR! argv "/Users/miguelcamba/.heroku/node-v4.1.1-darwin-x64/bin/node" "/Users/miguelcamba/.heroku/node-v4.1.1-darwin-x64/lib/node_modules/npm/cli.js" "install" "heroku-cli-ember-fastboot"
 ▸    npm ERR! node v4.1.1
 ▸    npm ERR! npm  v2.14.4
 ▸    npm ERR! code E404
 ▸
 ▸    npm ERR! 404 no such package available : heroku-cli-ember-fastboot
 ▸    npm ERR! 404
 ▸    npm ERR! 404 'heroku-cli-ember-fastboot' is not in the npm registry.
 ▸    npm ERR! 404 You should bug the author to publish it (or use the name yourself!)
 ▸    npm ERR! 404
 ▸    npm ERR! 404 Note that you can also install from a
 ▸    npm ERR! 404 tarball, folder, http url, or git url.
 ▸
 ▸    npm ERR! Please include the following file with any support request:
 ▸    npm ERR!     /Users/miguelcamba/.heroku/npm-debug.log
 ▸
 ▸    Try running again with GODE_DEBUG=info to see more output.
 !    error installing plugin heroku-cli-ember-fastboot