title: Adding a tool to an already created chefbook/box
body: <p>I am trying to learn kitchen/chef and I am following the tutorial provided here</p>
  
  <p><a href="http://kitchen.ci/docs/getting-started/installing" rel="nofollow">http://kitchen.ci/docs/getting-started/installing</a></p>
  
  <p>Right now I am stuck at question rather than a problem. The given tutorial creates a git-cookbook. Now what i want to know that we are we telling the kitchen to create a box with "git" installed ? </p>
  
  <p>I re-did the whole tutorial without an empty <code>metadata.rb</code> instead of providing anything in it (as per tutorial), i left it empty and ran <code>kitchen init --driver=kitchen-vagrant</code>. As expected, it created the cookbook/box without git installed on it. </p>
  
  <p>I then added following line in <code>metadata.rb</code></p>
  
  <pre><code>name "git"
  version "0.1.0"
  </code></pre>
  
  <p>And then ran <code>kitchen converge default-ubuntu-1204</code>. What i was expecting that it will update my cookbook/box with git installed on it but it didn't. </p>
  
  <p>Do i have to do <code>kitchen init</code> again ? wouldn't it overwrite my existing .kitchen.yml file and all the changes i have done in it ? What is best way to install a tool in an already created cookbook/box ? </p>