initial commit of the hawkBit documentation (#343)

Signed-off-by: Michael Hirsch <michael.hirsch@bosch-si.com>

docs/src/main/resources/CRollout.md

@@ -0,0 +1,17 @@
+---
+layout: default
+title : "Rollout"
+series : "homepagetop"
+sequence: "5"
+order : 3
+imagename : "rollout.png"
+style: "thumb1"
+animatestyle: "fadeIn"
+fadestyle: "fadeIn"
+fadeduration: "4"
+---
+hawkBit supports an easy and flexible rollout management which allows you to update a large amount of devices in separated groups.
+
+- Cascading start of the deployment groups based on installation status of the previous group.
+- Emergency shutdown of the rollout in case a group exceeds the defined error threshold.
+- Rollout progress monitoring for the entire rollout and the individual groups.