breakpoints do not work with fibers

ruby/debug#490
ruby/debug#486

Hopefully soon we can use fibers and debug gem together, but for now we
will have to build testable code so that we can debug inside of tests.

Signed-off-by: Kingdon Barrett <[email protected]>

Author: Kingdon Barrett

lib/bee_service.rb

@@ -25,6 +25,7 @@ def do_lifting
 
     @json_data = File.read(json_filename)
     @last_read = Time.now
+    binding.break
 
     validate_json
   end