make: Create include directory for make install to install headers. Put ndn-cpp-config.h in include/ndn-cpp.
diff --git a/ndn-cpp/common.hpp b/ndn-cpp/common.hpp
index 80d1874..b9b02c7 100644
--- a/ndn-cpp/common.hpp
+++ b/ndn-cpp/common.hpp
@@ -23,8 +23,8 @@
#else
// Use the boost header files in this distribution that were extracted with:
// cd <INCLUDE DIRECTORY WITH boost SUBDIRECTORY>
-// dist/bin/bcp --namespace=ndnboost shared_ptr make_shared weak_ptr function bind <NDN-CPP ROOT>
-// cd <NDN-CPP ROOT>
+// dist/bin/bcp --namespace=ndnboost shared_ptr make_shared weak_ptr function bind <NDN-CPP ROOT>/include
+// cd <NDN-CPP ROOT>/include
// mv boost ndnboost
// cd ndnboost
// (unset LANG; find . -type f -exec sed -i '' 's/\<boost\//\<ndnboost\//g' {} +)