title: Using subgit with repositories having .git directory
body: <p>I'm confused how to use subgit if I want my Git repository to have a .git subdirectory.</p>
  
  <p>If I use the conventional <code>subgit configure</code> + (<code>subgit import</code> or <code>subgit install</code>), it doesn't create a <code>.git</code> directory. </p>
  
  <p>If I do <code>git init</code> first, then I can do <code>subgit import</code> but it won't seem to let me do <code>subgit configure</code> first, and I want to setup my configuration file so I don't have to put a bunch of stuff in the command-line for <code>subgit import</code>.</p>
  
  <p>Is there a way to tell <code>subgit</code> to use the conventional <code>.git</code> directory for all the repository stuff?</p>