Plugins should be relative to output

lib/plugins/index.js

@@ -10,8 +10,9 @@ PluginsManager is an interface to work with multiple plugins at once:
 - Call hooks for all plugins, etc
 */
 
-function PluginsManager(book) {
-    this.book = book;
+function PluginsManager(output) {
+    this.output = output;
+    this.book = output.book;
     this.plugins = [];
 }
 
@@ -56,6 +57,4 @@ PluginsManager.prototype.load = function(name) {
     });
 };
 
-
-
 module.exports = PluginsManager;