renaming: ndn-cpp to ndn-cpp-dev

Change-Id: Iff3e4ff53a0005b7dd35c57d03da76b347170d03
diff --git a/.gitignore b/.gitignore
index 0fd0443..410c804 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,7 +24,7 @@
 /include/config.h
 /_configs.sed
 /stamp-h1
-/include/ndn-cpp/ndn-cpp-config.h
+/include/ndn-cpp-dev/ndn-cpp-config.h
 /include/stamp-h1
 /aclocal.m4
 /libtool