fixes #975 Add CMakeLists for demos
diff --git a/demo/CMakeLists.txt b/demo/CMakeLists.txt
new file mode 100644
index 0000000..4807f16
--- /dev/null
+++ b/demo/CMakeLists.txt
@@ -0,0 +1,29 @@
+#
+# Demonstration CMakeLists.txt for nanomsg demos.
+#
+# This file shows how one might use nanomsg from a another project
+# that is also CMake-driven.
+#
+# Thanks for the idea goes to @maddouri.
+#
+cmake_minimum_required (VERSION 2.8.7)
+
+project(nanomsg-demo)
+
+# Call this from your own project's makefile.
+find_package(nanomsg CONFIG REQUIRED)
+
+add_executable(async_demo async_demo.c)
+target_link_libraries(async_demo nanomsg)
+
+add_executable(device_demo device_demo.c)
+target_link_libraries(device_demo nanomsg)
+
+add_executable(pthread_demo pthread_demo.c)
+target_link_libraries(pthread_demo nanomsg)
+
+add_executable(pubsub_demo pubsub_demo.c)
+target_link_libraries(pubsub_demo nanomsg)
+
+add_executable(rpc_demo rpc_demo.c)
+target_link_libraries(rpc_demo nanomsg)
diff --git a/demo/README b/demo/README
index 4ee4cf8..dd0d164 100644
--- a/demo/README
+++ b/demo/README
@@ -3,3 +3,6 @@
your own code.
We welcome further contributions here.
+
+These have their own CMake driven configuration if you want to build them
+all. They are not built automatically.
