src bug: Adding missing topology files
Wrong wildcard in gitignore prevented them to be commited earlier
diff --git a/examples/topologies/topo-tree.txt b/examples/topologies/topo-tree.txt
new file mode 100644
index 0000000..6682dce
--- /dev/null
+++ b/examples/topologies/topo-tree.txt
@@ -0,0 +1,46 @@
+# topo-tree.txt
+
+# /------\ /------\ /------\ /------\
+# |leaf-1| |leaf-2| |leaf-3| |leaf-4|
+# \------/ \------/ \------/ \------/
+# ^ ^ ^ ^
+# | | | |
+# \ / \ /
+# \ / \ / 10Mbps / 1ms
+# \ / \ /
+# | | | |
+# v v v v
+# /-------\ /-------\
+# | rtr-1 | | rtr-2 |
+# \-------/ \-------/
+# ^ ^
+# | |
+# \ / 10 Mpbs / 1ms
+# +--------+ +--------+
+# | |
+# v v
+# /--------\
+# | root |
+# \--------/
+#
+
+router
+
+#node city y x mpi-partition
+leaf-1 NA 80 40 1
+leaf-2 NA 80 20 3
+leaf-3 NA 80 0 2
+leaf-4 NA 80 -20 4
+rtr-1 NA 60 20 1
+rtr-2 NA 60 0 2
+root NA 40 10 0
+
+link
+
+# from to capacity metric delay queue
+leaf-1 rtr-1 10Mbps 1 1ms 100
+leaf-2 rtr-1 10Mbps 1 1ms 100
+leaf-3 rtr-2 10Mbps 1 1ms 100
+leaf-4 rtr-2 10Mbps 1 1ms 100
+rtr-1 root 10Mbps 1 1ms 100
+rtr-2 root 10Mbps 1 1ms 100