Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/cloudbilling_v1.html b/docs/dyn/cloudbilling_v1.html
index c4ea90f..9bcb9d4 100644
--- a/docs/dyn/cloudbilling_v1.html
+++ b/docs/dyn/cloudbilling_v1.html
@@ -72,7 +72,7 @@
 
 </style>
 
-<h1><a href="cloudbilling_v1.html">Google Cloud Billing API</a></h1>
+<h1><a href="cloudbilling_v1.html">Cloud Billing API</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
   <code><a href="cloudbilling_v1.billingAccounts.html">billingAccounts()</a></code>
@@ -85,6 +85,11 @@
 <p class="firstline">Returns the projects Resource.</p>
 
 <p class="toc_element">
+  <code><a href="cloudbilling_v1.services.html">services()</a></code>
+</p>
+<p class="firstline">Returns the services Resource.</p>
+
+<p class="toc_element">
   <code><a href="#new_batch_http_request">new_batch_http_request()</a></code></p>
 <p class="firstline">Create a BatchHttpRequest object based on the discovery document.</p>
 <h3>Method Details</h3>