docs only.
add donut image for homepage announcement.
diff --git a/tools/droiddoc/templates/assets/images/home/donut-android.png b/tools/droiddoc/templates/assets/images/home/donut-android.png
new file mode 100644
index 0000000..85bc952
--- /dev/null
+++ b/tools/droiddoc/templates/assets/images/home/donut-android.png
Binary files differ