title: Bundle install killed message?
body: <p>I run bundle install on server machine - digital ocean and it is always gets killed like this:</p>
  
  <pre><code>RVM used your Gemfile for selecting Ruby, it is all fine - Heroku does that too,
  you can ignore these warnings with 'rvm rvmrc warning ignore /home/rails/car_main/Gemfile'.
  To ignore the warning for all files run 'rvm rvmrc warning ignore allGemfiles'.
  
  Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as
  root will break this application for all non-root users on this machine.
  Fetching gem metadata from https://rubygems.org/.........
  Fetching version metadata from https://rubygems.org/...
  Fetching dependency metadata from https://rubygems.org/..
  Resolving dependencies...
  Using rake 10.5.0
  Using i18n 0.7.0
  Using json 1.8.3
  Using minitest 5.8.4
  Using thread_safe 0.3.5
  Using tzinfo 1.2.2
  Using activesupport 4.2.0
  Using builder 3.2.2
  Using erubis 2.7.0
  Using mini_portile2 2.0.0
  Killed
  </code></pre>
  
  <p>What do I do?</p>