title: There was an error while trying to write to `/opt/wpscan/.bundle/config`. It is likely that you need to grant write permissions for that path
body: <p>Hello I use a google cloud instance to run my codes,
  <code>techonepl@instance-1:/opt/wpscan$ sudo gem install bundler &amp;&amp; bundle install --without test
  Fetching: bundler-1.14.6.gem (100%)
  Successfully installed bundler-1.14.6
  Parsing documentation for bundler-1.14.6
  Installing ri documentation for bundler-1.14.6
  Done installing documentation for bundler after 7 seconds
  1 gem installed
  There was an error while trying to write to</code>/opt/wpscan/.bundle/config<code>. It is likely that you need to grant write permissions for that path.</code>
  Even if I am running it using sudo, what else I need to grant?
  System info: Ubuntu 14.04 Trusty
  2GB Ram
  Runs on Google Cloud.
  I was trying to install "wpscan"</p>