def merge_yaml!(path, watch = true)
      self.merge!(YAML.load_file(path))
    rescue TypeError
      # If YAML loading fails, .load_file returns `false`.
    else
      watch_file(path) if watch && linux?
    end
def merge_yaml!(path, watch = true)
      self.merge!(YAML.load_file(path))
    rescue TypeError
      # If YAML loading fails, .load_file returns `false`.
    else
      watch_file(path) if watch && linux?
    end
Merge Config Hash with Hash from YAML file.