Update docs.
diff --git a/docs/dyn/books_v1.html b/docs/dyn/books_v1.html
index 4adb450..6c14c80 100644
--- a/docs/dyn/books_v1.html
+++ b/docs/dyn/books_v1.html
@@ -100,6 +100,11 @@
<p class="firstline">Returns the mylibrary Resource.</p>
<p class="toc_element">
+ <code><a href="books_v1.promooffer.html">promooffer()</a></code>
+</p>
+<p class="firstline">Returns the promooffer Resource.</p>
+
+<p class="toc_element">
<code><a href="books_v1.volumes.html">volumes()</a></code>
</p>
<p class="firstline">Returns the volumes Resource.</p>