cherrypick from ics-mr1 docs: source for nw app Change-Id: If50f407a0e56fa802fe9beedaa650e3a131872b2

Change-Id: I55d8668f4065129c844ada239f268a6621df4780
diff --git a/samples/training/network-usage/README.txt b/samples/training/network-usage/README.txt
new file mode 100644
index 0000000..cc9a7a0
--- /dev/null
+++ b/samples/training/network-usage/README.txt
@@ -0,0 +1,14 @@
+README
+======
+
+This Network Usage sample app does the following:
+
+-- Downloads an XML feed from StackOverflow.com for the most recent posts tagged "android".
+
+-- Parses the XML feed, combines feed elements with HTML markup, and displays the resulting HTML in the UI.
+
+-- Lets users control their network data usage through a settings UI. Users can choose to fetch the feed
+   when any network connection is available, or only when a Wi-Fi connection is available.
+
+-- Detects when there is a change in the device's connection status and responds accordingly. For example, if
+   the device loses its network connection, the app will not attempt to download the feed.