title: what should be in the git description file?
body: <p>After initialising a new local repo there is a <code>description</code> file present.</p>
  
  <p>What is it used for and how should I format it? Or is it simply a local helper file.</p>
  
  <p>This thread <a href="http://lists.gnu.org/archive/html/savannah-hackers/2009-03/msg00051.html">Accessing git's `description' file</a> suggests one style, but no man page or other reference to why it should be the way it is. </p>