title: Simple graph of nodes and links without using force layout
body: <p>How can I make a basic connected graph (two nodes and a link connecting them for example) that doesn't use a <code>force()</code> layout?  I just want to be able to drag a node and have the link adjust to stay connected as a node is being dragged.  I dont want any of the charge or positioning capabilities of <code>force()</code>. Essentially I want every node to be "sticky".  Nodes will only move when being dragged.</p>
  
  <p>But is there a simple way to do this?  Every example I have seen is built around a force directed graph.</p>
  
  <p>I've looked at this example, <a href="http://bl.ocks.org/mbostock/3750558" rel="noreferrer">http://bl.ocks.org/mbostock/3750558</a> , but it starts with a force directed graph then makes the nodes sticky. This approach seems backwards for what I want.</p>
  
  <p>Is there a basic example somewhere?</p>