fix ruby kw warnings, all can be methods

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@8760 626c5289-ae23-0410-ae9c-e8d60b6d4f22

SWIG/Examples/test-suite/ruby/naming.i

@@ -82,6 +82,16 @@ public:
 	{
 		return true;
 	}
+  int begin() 
+  {
+    return 1;
+  }
+
+  int end() 
+  {
+    return 1;
+  }
+  
 };
 
 %}