title: rake or any other rake command not working properly
body: <p>Hi i was doing some coding and tried to </p>
  
  <pre><code>rake routes
  </code></pre>
  
  <p>and this error message came up out and i dont know what to do</p>
  
  <pre><code>rake aborted!
  Gem::LoadError: You have already activated rake 10.4.2, but your Gemfile requires rake 10.4.0. Prepending `bundle exec` to your command may solve this.
  
  /home/simplybel/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.7.4/lib/bundler/runtime.rb:34:in `block in setup'
  /home/simplybel/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.7.4/lib/bundler/runtime.rb:19:in `setup'
  /home/simplybel/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.7.4/lib/bundler.rb:121:in `setup'
  /home/simplybel/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.7.4/lib/bundler/setup.rb:7:in `&lt;top (required)&gt;'
  /home/simplybel/projects/gamification/config/boot.rb:4:in `&lt;top (required)&gt;'
  /home/simplybel/projects/gamification/config/application.rb:1:in `&lt;top (required)&gt;'
  /home/simplybel/projects/gamification/Rakefile:4:in `&lt;top (required)&gt;'
  LoadError: cannot load such file -- bundler/setup
  /home/simplybel/projects/gamification/config/boot.rb:4:in `&lt;top (required)&gt;'
  /home/simplybel/projects/gamification/config/application.rb:1:in `&lt;top (required)&gt;'
  /home/simplybel/projects/gamification/Rakefile:4:in `&lt;top (required)&gt;'
  (See full trace by running task with --trace)
  </code></pre>
  
  <p>any help with this would really be appreciated</p>