Refresh all docs (#298)

Change the discovery query to fetch all discovery docs, not just the
preferred ones.
diff --git a/docs/dyn/drive_v2.properties.html b/docs/dyn/drive_v2.properties.html
index b15e8c7..6b13b44 100644
--- a/docs/dyn/drive_v2.properties.html
+++ b/docs/dyn/drive_v2.properties.html
@@ -82,16 +82,16 @@
 <p class="firstline">Gets a property by its key.</p>
 <p class="toc_element">
   <code><a href="#insert">insert(fileId, body)</a></code></p>
-<p class="firstline">Adds a property to a file.</p>
+<p class="firstline">Adds a property to a file, or updates it if it already exists.</p>
 <p class="toc_element">
   <code><a href="#list">list(fileId)</a></code></p>
 <p class="firstline">Lists a file's properties.</p>
 <p class="toc_element">
   <code><a href="#patch">patch(fileId, propertyKey, body, visibility=None)</a></code></p>
-<p class="firstline">Updates a property. This method supports patch semantics.</p>
+<p class="firstline">Updates a property, or adds it if it doesn't exist. This method supports patch semantics.</p>
 <p class="toc_element">
   <code><a href="#update">update(fileId, propertyKey, body, visibility=None)</a></code></p>
-<p class="firstline">Updates a property.</p>
+<p class="firstline">Updates a property, or adds it if it doesn't exist.</p>
 <h3>Method Details</h3>
 <div class="method">
     <code class="details" id="delete">delete(fileId, propertyKey, visibility=None)</code>
@@ -133,7 +133,7 @@
 
 <div class="method">
     <code class="details" id="insert">insert(fileId, body)</code>
-  <pre>Adds a property to a file.
+  <pre>Adds a property to a file, or updates it if it already exists.
 
 Args:
   fileId: string, The ID of the file. (required)
@@ -207,7 +207,7 @@
 
 <div class="method">
     <code class="details" id="patch">patch(fileId, propertyKey, body, visibility=None)</code>
-  <pre>Updates a property. This method supports patch semantics.
+  <pre>Updates a property, or adds it if it doesn't exist. This method supports patch semantics.
 
 Args:
   fileId: string, The ID of the file. (required)
@@ -251,7 +251,7 @@
 
 <div class="method">
     <code class="details" id="update">update(fileId, propertyKey, body, visibility=None)</code>
-  <pre>Updates a property.
+  <pre>Updates a property, or adds it if it doesn't exist.
 
 Args:
   fileId: string, The ID of the file. (required)