more with method naming, add XML hasChildren() method

core/src/processing/data/XML.java

@@ -72,7 +72,7 @@ public class XML implements Serializable {
     this(PApplet.createReader(file));
   }
 
-  
+
   public XML(Reader reader) {
     try {
       DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
@@ -240,6 +240,12 @@ public class XML implements Serializable {
   }
 
 
+  public boolean hasChildren() {
+    checkChildren();
+    return children.length > 0;
+  }
+
+
   /**
    * Put the names of all children into an array. Same as looping through
    * each child and calling getName() on each XMLElement.