ndn-traffic-generator: Update

Change-Id: I5e1b2ea5de1679ccc625b092a5df82c6be71ae15
diff --git a/ndn-traffic-generator/debian/control b/ndn-traffic-generator/debian/control
index 80f9b47..d072470 100644
--- a/ndn-traffic-generator/debian/control
+++ b/ndn-traffic-generator/debian/control
@@ -4,7 +4,7 @@
 Build-Depends: debhelper (>= 8.0.0),
  python (>= 2.7.0),
  pkg-config (>= 0.26),
- libndn-cxx-dev (>= 0.6.5)
+ libndn-cxx-dev (>= 0.6.6)
 Standards-Version: 3.9.2
 Section: net
 Homepage: http://github.com/named-data/ndn-traffic-generator