title: "dep init -v", it do not generate Gopkg.toml and Gopkg.lock, why?
body: <p>When I run <code>dep init</code>, it takes long time, and it does not generate <code>Gopkg.toml</code> and <code>Gopkg.lock</code>. Why aren't these files getting generated? </p>
  
  <p>The code is <a href="https://github.com/dean-su/micro-youtube-drizzler/tree/master/srv/download" rel="nofollow noreferrer">here</a></p>
  
  <pre><code>zhiwei@myVM:~/go/bin$ ll
  total 29164
  drwxr-xr-x 2 zhiwei zhiwei     4096 Mar  1 08:52 ./
  drwxr-xr-x 6 zhiwei zhiwei     4096 Feb 28 21:22 ../
  -rwxrwxr-x 1 zhiwei zhiwei 13413097 Mar  1 08:52 dep*
  -rwxr-xr-x 1 zhiwei zhiwei 16437361 Feb 26 21:35 micro*
  zhiwei@myVM:~/go/bin$ cd ../src/github.com/micro-youtube-
  drizzler/srv/download/
  zhiwei@myVM:~/go/src/github.com/micro-youtube-drizzler/srv/download$ l
  bak/  Dockerfile*  main.go*  proto/  README.md*
  zhiwei@myVM:~/go/src/github.com/micro-youtube-drizzler/srv/download$ dep init -v
  Getting direct dependencies...
  Checked 3 directories for packages.
  Found 7 direct dependencies.
  </code></pre>