make: Create include directory for make install to install headers. Put ndn-cpp-config.h in include/ndn-cpp.
diff --git a/ndn-cpp/security/identity/basic-identity-storage.cpp b/ndn-cpp/security/identity/basic-identity-storage.cpp
index 130c5b1..e383a32 100644
--- a/ndn-cpp/security/identity/basic-identity-storage.cpp
+++ b/ndn-cpp/security/identity/basic-identity-storage.cpp
@@ -6,7 +6,7 @@
*/
// Only compile if ndn-cpp-config.h defines NDN_CPP_HAVE_SQLITE3.
-#include "../../ndn-cpp-config.h"
+#include <ndn-cpp/ndn-cpp-config.h>
#ifdef NDN_CPP_HAVE_SQLITE3
#if 1