Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/drive_v2.html b/docs/dyn/drive_v2.html
index c49dcad..c43461a 100644
--- a/docs/dyn/drive_v2.html
+++ b/docs/dyn/drive_v2.html
@@ -105,6 +105,11 @@
 <p class="firstline">Returns the comments Resource.</p>
 
 <p class="toc_element">
+  <code><a href="drive_v2.drives.html">drives()</a></code>
+</p>
+<p class="firstline">Returns the drives Resource.</p>
+
+<p class="toc_element">
   <code><a href="drive_v2.files.html">files()</a></code>
 </p>
 <p class="firstline">Returns the files Resource.</p>