just minor changes

src/Nloc.java

@@ -16,6 +16,10 @@ public class Nloc {
     this.dropletList = new ArrayList<Droplet>();
   }
 
+//  public void addChannel(Channel chan) {
+//    chanlist.add(chan);
+//  }
+//
   public void addChannel(Channel chan) {
     chanlist.add(chan);
   }