pib: correct build target path

refs #3018

Change-Id: I98be301026b7c0cd9469ef6d9732ff9b28560d76
diff --git a/tools/pib/wscript b/tools/pib/wscript
index 7a40d5a..3e82b60 100644
--- a/tools/pib/wscript
+++ b/tools/pib/wscript
@@ -13,7 +13,7 @@
 
 
     bld(features=['cxx', 'cxxprogram'],
-        target='ndn-pib',
+        target='../../bin/ndn-pib',
         source='ndn-pib.cpp',
         use='pib-objects',
         )