Adding topology auto-layout.

Change-Id: I2b9e0b5808b8d193e8d08b7fe6ffdb007b083809
diff --git a/apps/layout/BUCK b/apps/layout/BUCK
new file mode 100644
index 0000000..87e21e3
--- /dev/null
+++ b/apps/layout/BUCK
@@ -0,0 +1,18 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+    '//lib:org.apache.karaf.shell.console',
+    '//core/common:onos-core-common',
+    '//cli:onos-cli',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+)
+
+onos_app (
+    title = 'UI Auto-Layout',
+    category = 'Utility',
+    url = 'http://onosproject.org',
+    description = 'Automatically lays out the network topology using roles assigned to each ' +
+        'network element via the network configuration. Supports multiple layout variants.',
+)