add some javadoc

git-svn-id: https://svn.apache.org/repos/asf/incubator/ivy/trunk@483983 13f79535-47bb-0310-9956-ffa450edef68

src/java/fr/jayasoft/ivy/Ivy.java

@@ -67,6 +67,15 @@ import fr.jayasoft.ivy.xml.XmlModuleDescriptorUpdater;
 import fr.jayasoft.ivy.xml.XmlReportParser;
 
 /**
+ * Ivy is a free java based dependency manager.
+ * 
+ * This class is the main class of Ivy, which offers mainly dependency resolution.
+ * 
+ * Here is one typical usage:
+ * Ivy ivy = new Ivy();
+ * ivy.configure(new URL("ivyconf.xml"));
+ * ivy.resolve(new URL("ivy.xml"), null, new String[] {"*"}, null, null, true);
+ *  
  * @author x.hanin
  *
  */