Fix no-preload for embed

app/helpers/asciicasts_helper.rb

@@ -17,12 +17,15 @@ module AsciicastsHelper
       speed: options.speed,
       autoplay: options.autoplay,
       loop: options.loop,
-      preload: options.preload,
       'start-at' => options.t,
       'font-size' => options.size,
       theme: options.theme,
     }
 
+    if options.preload # because {preload: false} gets converted to "preload=preload" by Rails
+      opts[:preload] = true
+    end
+
     unless skip_titlebar
       opts.merge!(
         title: asciicast.title,

app/presenters/bare_asciicast_page_presenter.rb

@@ -6,7 +6,7 @@ class BareAsciicastPagePresenter
     decorated_asciicast = asciicast.decorate
 
     playback_options = {
-      'theme' =>  decorated_asciicast.theme_name
+      'theme' => decorated_asciicast.theme_name
     }.merge(playback_options)
 
     new(decorated_asciicast, EmbedPlaybackOptions.new(playback_options))