Final tweaks

cluster/message.proto

@@ -58,4 +58,4 @@ message CommandLoadResponse {
 
 message CommandRemoveNodeResponse {
     string error = 1;
-}
+}

cluster/service.go

@@ -78,6 +78,7 @@ type Database interface {
 	Load(lr *command.LoadRequest) error
 }
 
+// Manager is the interface node-management systems must implement
 type Manager interface {
 	// Remove removes the node, given by id, from the cluster
 	Remove(rn *command.RemoveNodeRequest) error