Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
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+<style>
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+body, h1, h2, h3, div, span, p, pre, a {
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+  font-weight: inherit;
+  font-style: inherit;
+  font-size: 100%;
+  font-family: inherit;
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+pre, code {
+  line-height: 1.5;
+  font-family: Monaco, 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', 'Lucida Console', monospace;
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+  font-family: Arial, sans serif;
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+  border-bottom: solid #CCC 1px;
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+.toc_element {
+  margin-top: 0.5em;
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+.firstline {
+  margin-left: 2 em;
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+.method  {
+  margin-top: 1em;
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+.details {
+  font-weight: bold;
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+</style>
+
+<h1><a href="books_v1.html">Books API</a> . <a href="books_v1.familysharing.html">familysharing</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#getFamilyInfo">getFamilyInfo(source=None)</a></code></p>
+<p class="firstline">Gets information regarding the family that the user is part of.</p>
+<p class="toc_element">
+  <code><a href="#share">share(docId=None, source=None, volumeId=None)</a></code></p>
+<p class="firstline">Initiates sharing of the content with the user's family. Empty response indicates success.</p>
+<p class="toc_element">
+  <code><a href="#unshare">unshare(docId=None, source=None, volumeId=None)</a></code></p>
+<p class="firstline">Initiates revoking content that has already been shared with the user's family. Empty response indicates success.</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="getFamilyInfo">getFamilyInfo(source=None)</code>
+  <pre>Gets information regarding the family that the user is part of.
+
+Args:
+  source: string, String to identify the originator of this request.
+
+Returns:
+  An object of the form:
+
+    {
+    "kind": "books#familyInfo", # Resource type.
+    "membership": { # Family membership info of the user that made the request.
+      "acquirePermission": "A String", # Restrictions on user buying and acquiring content.
+      "allowedMaturityRating": "A String", # The maximum allowed maturity rating for the user.
+      "role": "A String", # The role of the user in the family.
+      "ageGroup": "A String", # The age group of the user.
+      "isInFamily": True or False,
+    },
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="share">share(docId=None, source=None, volumeId=None)</code>
+  <pre>Initiates sharing of the content with the user's family. Empty response indicates success.
+
+Args:
+  docId: string, The docid to share.
+  source: string, String to identify the originator of this request.
+  volumeId: string, The volume to share.
+</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="unshare">unshare(docId=None, source=None, volumeId=None)</code>
+  <pre>Initiates revoking content that has already been shared with the user's family. Empty response indicates success.
+
+Args:
+  docId: string, The docid to unshare.
+  source: string, String to identify the originator of this request.
+  volumeId: string, The volume to unshare.
+</pre>
+</div>
+
+</body></html>
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