Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/epy/toc-everything.html b/docs/epy/toc-everything.html
index 1071ac4..3f32496 100644
--- a/docs/epy/toc-everything.html
+++ b/docs/epy/toc-everything.html
@@ -281,7 +281,8 @@
      >googleapiclient.discovery_cache.file_cache.cache</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#DEFAULT_CHUNK_SIZE"
      >googleapiclient.http.DEFAULT_CHUNK_SIZE</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#DEFAULT_HTTP_TIMEOUT_SEC"
      >googleapiclient.http.DEFAULT_HTTP_TIMEOUT_SEC</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#LOGGER"
-     >googleapiclient.http.LOGGER</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#MAX_URI_LENGTH"
+     >googleapiclient.http.LOGGER</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#MAX_BATCH_LIMIT"
+     >googleapiclient.http.MAX_BATCH_LIMIT</a><br />    <a target="mainFrame" href="googleapiclient.http-module.html#MAX_URI_LENGTH"
      >googleapiclient.http.MAX_URI_LENGTH</a><br />  <div class="private">
     <a target="mainFrame" href="googleapiclient.http-module.html#_LEGACY_BATCH_URI"
      >googleapiclient.http._LEGACY_BATCH_URI</a><br />  </div>