class Shotgun::Loader

def format_error(error, backtrace)
  "<h1>Boot Error</h1>" +
  "<p>Something went wrong while loading <tt>#{escape_html(rackup_file)}</tt></p>" +
  "<h3>#{escape_html(error)}</h3>" +
  "<pre>#{escape_html(backtrace.join("\n"))}</pre>"
end