bin/roku in roku_builder-3.11.1 vs bin/roku in roku_builder-3.12.0

@@ -102,11 +102,11 @@
 
   opts.on("--screens", "Command: show possible screens") do
     options[:screens] = true
   end
 
-  opts.on("-m", "--monitor TYPE", "Command: run telnet to monitor roku log") do |m|
-    options[:monitor] = m
+  opts.on("-m", "--monitor [TYPE]", "Command: run telnet to monitor roku log") do |m|
+    options[:monitor] = m || "main"
   end
 
   opts.on("-u", "--update-manifest", "Command: update the manifest file") do
     options[:update] = true
   end