Add tango sample

samples/HelloTango/Demo/CMakeLists.txt

@@ -0,0 +1,21 @@
+# Make sure the compiler can find include files from our Hello library.
+INCLUDE_DIRECTORIES (
+	${CMAKE_BINARY_DIR}
+	${CMAKE_SOURCE_DIR}
+)
+
+# Make sure the linker can find the Hello library once it is built.
+LINK_DIRECTORIES (
+	${HELLO_BINARY_DIR}/Hello
+)
+
+# Add executable called "helloDemo" that is built from the source files
+# "demo.cxx" and "demo_b.cxx".  The extensions are automatically found.
+ADD_EXECUTABLE (helloDemo 
+	demo.d
+)
+
+# Link the executable to the Hello library.
+TARGET_LINK_LIBRARIES (helloDemo 
+	Hello
+)