title: Golang using golang dep with dep
body: <p>I use the go dep tool version v0.4.1, now when I run dep init it create 2 files as expected , when I open the <code>gopkg.lock</code> I found for example the following</p>
  
  <pre><code>[[projects]]
    name = "github.com/inconshreveable/mousetrap"
    packages = ["."]
    revision = "76626ae9c91c4f2a10f34cad8ce832c93bb75"
    version = "v1.0"
  </code></pre>
  
  <p>I dont use this im my source code, search it deeply also on vendor, so why it's there, what am I missing here ? 
  if it transitive dep I need to find usage of it in vendor library, isnt it ? </p>