--- /dev/null
+Modules in the directory are for "Environment Building".
+"Environment Building" is for creating "virtual network" for Performance Evaluation.
+The builder.py contains the quick test code for creates a "virtual network" from a config file.
+
+Usage:
+ python builder.py --config /etc/vstf/env/Tn.json
+
+Please modify example config file "/etc/vstf/model/Tn.json" to suit your own Environment.
+