Adding README to dist

diff --git a/src/core/transport/http/sender/ntlm/Makefile.am b/src/core/transport/http/sender/ntlm/Makefile.am
index ff57b7b..9983fa6 100644
--- a/src/core/transport/http/sender/ntlm/Makefile.am
+++ b/src/core/transport/http/sender/ntlm/Makefile.am
@@ -14,3 +14,4 @@
 # limitations under the License.
 SUBDIRS = $(NTLM_WRAPPER_DIR)
 DIST_SUBDIRS=heimdal libntlm
+EXTRA_DIST=README