Fix help output

lib/args.nim

@@ -38,4 +38,7 @@ proc parseArgs*(): Option[Args] =
   if command.len > 0:
     args.cmd = some(command)
 
+  if args.name.isSome or args.cmd.isSome or args.profile.isSome:
     return some(args)
+  else:
+    return none(Args)

main.nim

@@ -5,7 +5,6 @@ import random
 
 proc main(): int =
   let args = parseArgs()
-  echo args
 
   if args.isNone:
     echo "Usage: bwshell --name=sandbox_name --profile=profile <sandbox_cmd>"