Add tango sample

samples/HelloTango/CMakeLists.txt

@@ -0,0 +1,30 @@
+#################################
+# Preamble
+##############
+
+# where to look first for cmake modules, before ${CMAKE_ROOT}/Modules/ 
+# is checked
+set(CMAKE_MODULE_PATH
+	${CMAKE_SOURCE_DIR}/cmake/Modules
+)
+
+# Using Tango
+set(CMAKE_D_USE_TANGO True)
+
+# check for DDoc usage
+include(UseDDoc)
+
+#################################
+# Project
+##############
+
+# The name of our project is "HELLO".  CMakeLists files in this project can
+# refer to the root source directory of the project as ${HELLO_SOURCE_DIR} and
+# to the root binary directory of the project as ${HELLO_BINARY_DIR}.
+PROJECT (HELLO D)
+
+# Recurse into the "Hello" and "Demo" subdirectories.  This does not actually
+# cause another cmake executable to run.  The same process will walk through
+# the project's entire directory structure.
+ADD_SUBDIRECTORY (Hello)
+ADD_SUBDIRECTORY (Demo)