Implement ExperimentManager

refs: #2852

Change-Id: I49b50989477914ae4b076d6d39ca661f50fc92aa
diff --git a/.gitignore b/.gitignore
index be51b16..9b58941 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 openflow
 examples
 util
+.DS_Store