Call Atomeye to visualize atomic structure.

<p>
<a href="http://li.mit.edu/Archive/Graphics/A">Atomeye</a>
 is an external visualization tool developed by Dr. Ju Li.

<p>
Requires variables <tt>atomeyepath</tt> and <tt>atomeyeexe</tt> to be set
before calling this command.  
MD++ saves the atomic configuration into file <tt>atomeye.cfg</tt>
in the current directory before calling Atomeye.

