Getting npm install to work on AWS Elastic Beanstalk

Notes.md

1. Disable normal asset compilation
2. Make sure npm is updated to 3.5.0
3. Add commands to make sure #2 is done before app code is deployed
4. Use container commands to do npm install and precompile assets

  commands:
  00_update_npm:
    command: "sh /tmp/install_node_npm.sh"

  container_commands:
    01_npm_install:
      command: npm install --unsafe-perm
    02_precompile_assets:
      command: bundle exec rake assets:precompile