Keylines add link

gistfile1.js

chart.createLink(nodeId, newLinkId, {style: newLinkStyle}, function(linkedId){
  if(linkedId){
    var fromNode = chart.getItem(nodeId);
    var toNode = chart.getItem(linkedId);
    if(fromNode && toNode){
      //great we have them both so now we are ready to save.
      console.log("Linking from "+JSON.stringify(fromNode)+" to "+JSON.stringify(toNode));
    }
    else{
       console.log("One side of the link is missing");
    }
  }
  else{
    chart.removeItem(newLinkId);
  }
  removePlusIcon();
});