SEBA-497 delayering, Makefile, and tox for simpleexampleservice

Change-Id: If4d5895ad598e4861cf3d931d94d7e4cf56752e3
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..e039eea
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+xossynchronizer~=3.0.1
+xosapi~=3.0.1
+xoskafka~=3.0.1