Fix bootloader release.

rel/config.exs

@@ -4,8 +4,6 @@ use Mix.Releases.Config,
   default_release: :default,
   default_environment: :prod
 
-plugin Bootloader.Plugin
-
 # For a full list of config options for both releases
 # and environments, visit https://hexdocs.pm/distillery/configuration.html
 
@@ -29,7 +27,7 @@ end
 
 release :farmbot do
   set(version: current_version(:farmbot))
-  # plugin Bootloader.Plugin
+  plugin Bootloader.Plugin
   if System.get_env("NERVES_SYSTEM") do
     set(dev_mode: false)
     set(include_src: false)