Add missing option trackAllPages.

Author: francois2metz

lib/index.js

@@ -16,6 +16,7 @@ var GTM = module.exports = integration('Google Tag Manager')
   .global('google_tag_manager')
   .option('containerId', '')
   .option('environment', '')
+  .option('trackAllPages', false)
   .option('trackNamedPages', true)
   .option('trackCategorizedPages', true)
   .tag('no-env', '<script src="//www.googletagmanager.com/gtm.js?id={{ containerId }}&l=dataLayer">')