Added Interest constructor for name and interestLifetimeMilliseconds
diff --git a/ndn-cpp/interest.hpp b/ndn-cpp/interest.hpp
index 910dd53..e4aeeb1 100644
--- a/ndn-cpp/interest.hpp
+++ b/ndn-cpp/interest.hpp
@@ -141,10 +141,16 @@
   {
   }
 
+  Interest(const Name &name, double interestLifetimeMilliseconds) 
+  : name_(name)
+  {
+    construct();
+    interestLifetimeMilliseconds_ = interestLifetimeMilliseconds;
+  }
+
   Interest(const Name &name) 
   : name_(name)
   {
-    name_ = name;
     construct();
   }