Added AccessTokenCredentials
diff --git a/docs/oauth2client.appengine.html b/docs/oauth2client.appengine.html
index 89e1552..4a491ad 100644
--- a/docs/oauth2client.appengine.html
+++ b/docs/oauth2client.appengine.html
@@ -8,11 +8,10 @@
 <td valign=bottom>&nbsp;<br>
 <font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong><a href="oauth2client.html"><font color="#ffffff">oauth2client</font></a>.appengine</strong></big></big></font></td
 ><td align=right valign=bottom
-><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="file:/home/jcgregorio/projects/apiary/oauth2client/appengine.py">/home/jcgregorio/projects/apiary/oauth2client/appengine.py</a></font></td></tr></table>
+><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="file:/usr/local/google/home/jcgregorio/projects/apiclient/oauth2client/appengine.py">/usr/local/google/home/jcgregorio/projects/apiclient/oauth2client/appengine.py</a></font></td></tr></table>
     <p><tt>Utilities&nbsp;for&nbsp;Google&nbsp;App&nbsp;Engine<br>
 &nbsp;<br>
-Utilities&nbsp;for&nbsp;making&nbsp;it&nbsp;easier&nbsp;to&nbsp;use&nbsp;OAuth&nbsp;2.0<br>
-on&nbsp;Google&nbsp;App&nbsp;Engine.</tt></p>
+Utilities&nbsp;for&nbsp;making&nbsp;it&nbsp;easier&nbsp;to&nbsp;use&nbsp;OAuth&nbsp;2.0&nbsp;on&nbsp;Google&nbsp;App&nbsp;Engine.</tt></p>
 <p>
 <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
 <tr bgcolor="#aa55cc">
@@ -30,12 +29,6 @@
     
 <tr><td bgcolor="#ee77aa"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
 <td width="100%"><dl>
-<dt><font face="helvetica, arial"><a href="__builtin__.html#object">__builtin__.object</a>
-</font></dt><dd>
-<dl>
-<dt><font face="helvetica, arial"><a href="oauth2client.appengine.html#StorageByKeyName">StorageByKeyName</a>
-</font></dt></dl>
-</dd>
 <dt><font face="helvetica, arial"><a href="google.appengine.ext.db.html#Property">google.appengine.ext.db.Property</a>(<a href="__builtin__.html#object">__builtin__.object</a>)
 </font></dt><dd>
 <dl>
@@ -43,6 +36,12 @@
 </font></dt><dt><font face="helvetica, arial"><a href="oauth2client.appengine.html#FlowProperty">FlowProperty</a>
 </font></dt></dl>
 </dd>
+<dt><font face="helvetica, arial"><a href="oauth2client.client.html#Storage">oauth2client.client.Storage</a>(<a href="__builtin__.html#object">__builtin__.object</a>)
+</font></dt><dd>
+<dl>
+<dt><font face="helvetica, arial"><a href="oauth2client.appengine.html#StorageByKeyName">StorageByKeyName</a>
+</font></dt></dl>
+</dd>
 </dl>
  <p>
 <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
@@ -51,8 +50,9 @@
 <font color="#000000" face="helvetica, arial"><a name="CredentialsProperty">class <strong>CredentialsProperty</strong></a>(<a href="google.appengine.ext.db.html#Property">google.appengine.ext.db.Property</a>)</font></td></tr>
     
 <tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
-<td colspan=2><tt>Utility&nbsp;property&nbsp;that&nbsp;allows&nbsp;easy<br>
-storage&nbsp;and&nbsp;retrieval&nbsp;of<br>
+<td colspan=2><tt>App&nbsp;Engine&nbsp;datastore&nbsp;<a href="google.appengine.ext.db.html#Property">Property</a>&nbsp;for&nbsp;Credentials.<br>
+&nbsp;<br>
+Utility&nbsp;property&nbsp;that&nbsp;allows&nbsp;easy&nbsp;storage&nbsp;and&nbsp;retrieval&nbsp;of<br>
 oath2client.Credentials<br>&nbsp;</tt></td></tr>
 <tr><td>&nbsp;</td>
 <td width="100%"><dl><dt>Method resolution order:</dt>
@@ -88,7 +88,7 @@
 &nbsp;<br>
 Args:<br>
 &nbsp;&nbsp;verbose_name:&nbsp;User&nbsp;friendly&nbsp;name&nbsp;of&nbsp;property.<br>
-&nbsp;&nbsp;name:&nbsp;Storage&nbsp;name&nbsp;for&nbsp;property.&nbsp;&nbsp;By&nbsp;default,&nbsp;uses&nbsp;attribute&nbsp;name<br>
+&nbsp;&nbsp;name:&nbsp;<a href="oauth2client.client.html#Storage">Storage</a>&nbsp;name&nbsp;for&nbsp;property.&nbsp;&nbsp;By&nbsp;default,&nbsp;uses&nbsp;attribute&nbsp;name<br>
 &nbsp;&nbsp;&nbsp;&nbsp;as&nbsp;it&nbsp;is&nbsp;assigned&nbsp;in&nbsp;the&nbsp;Model&nbsp;sub-class.<br>
 &nbsp;&nbsp;default:&nbsp;Default&nbsp;value&nbsp;for&nbsp;property&nbsp;if&nbsp;none&nbsp;is&nbsp;assigned.<br>
 &nbsp;&nbsp;required:&nbsp;Whether&nbsp;property&nbsp;is&nbsp;required.<br>
@@ -138,8 +138,9 @@
 <font color="#000000" face="helvetica, arial"><a name="FlowProperty">class <strong>FlowProperty</strong></a>(<a href="google.appengine.ext.db.html#Property">google.appengine.ext.db.Property</a>)</font></td></tr>
     
 <tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
-<td colspan=2><tt>Utility&nbsp;property&nbsp;that&nbsp;allows&nbsp;easy<br>
-storage&nbsp;and&nbsp;retreival&nbsp;of&nbsp;an<br>
+<td colspan=2><tt>App&nbsp;Engine&nbsp;datastore&nbsp;<a href="google.appengine.ext.db.html#Property">Property</a>&nbsp;for&nbsp;Flow.<br>
+&nbsp;<br>
+Utility&nbsp;property&nbsp;that&nbsp;allows&nbsp;easy&nbsp;storage&nbsp;and&nbsp;retreival&nbsp;of&nbsp;an<br>
 oauth2client.Flow<br>&nbsp;</tt></td></tr>
 <tr><td>&nbsp;</td>
 <td width="100%"><dl><dt>Method resolution order:</dt>
@@ -172,7 +173,7 @@
 &nbsp;<br>
 Args:<br>
 &nbsp;&nbsp;verbose_name:&nbsp;User&nbsp;friendly&nbsp;name&nbsp;of&nbsp;property.<br>
-&nbsp;&nbsp;name:&nbsp;Storage&nbsp;name&nbsp;for&nbsp;property.&nbsp;&nbsp;By&nbsp;default,&nbsp;uses&nbsp;attribute&nbsp;name<br>
+&nbsp;&nbsp;name:&nbsp;<a href="oauth2client.client.html#Storage">Storage</a>&nbsp;name&nbsp;for&nbsp;property.&nbsp;&nbsp;By&nbsp;default,&nbsp;uses&nbsp;attribute&nbsp;name<br>
 &nbsp;&nbsp;&nbsp;&nbsp;as&nbsp;it&nbsp;is&nbsp;assigned&nbsp;in&nbsp;the&nbsp;Model&nbsp;sub-class.<br>
 &nbsp;&nbsp;default:&nbsp;Default&nbsp;value&nbsp;for&nbsp;property&nbsp;if&nbsp;none&nbsp;is&nbsp;assigned.<br>
 &nbsp;&nbsp;required:&nbsp;Whether&nbsp;property&nbsp;is&nbsp;required.<br>
@@ -219,19 +220,25 @@
 <table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
 <tr bgcolor="#ffc8d8">
 <td colspan=3 valign=bottom>&nbsp;<br>
-<font color="#000000" face="helvetica, arial"><a name="StorageByKeyName">class <strong>StorageByKeyName</strong></a>(<a href="__builtin__.html#object">__builtin__.object</a>)</font></td></tr>
+<font color="#000000" face="helvetica, arial"><a name="StorageByKeyName">class <strong>StorageByKeyName</strong></a>(<a href="oauth2client.client.html#Storage">oauth2client.client.Storage</a>)</font></td></tr>
     
 <tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
 <td colspan=2><tt>Store&nbsp;and&nbsp;retrieve&nbsp;a&nbsp;single&nbsp;credential&nbsp;to&nbsp;and&nbsp;from<br>
 the&nbsp;App&nbsp;Engine&nbsp;datastore.<br>
 &nbsp;<br>
-This&nbsp;Storage&nbsp;helper&nbsp;presumes&nbsp;the&nbsp;Credentials<br>
+This&nbsp;<a href="oauth2client.client.html#Storage">Storage</a>&nbsp;helper&nbsp;presumes&nbsp;the&nbsp;Credentials<br>
 have&nbsp;been&nbsp;stored&nbsp;as&nbsp;a&nbsp;CredenialsProperty<br>
 on&nbsp;a&nbsp;datastore&nbsp;model&nbsp;class,&nbsp;and&nbsp;that&nbsp;entities<br>
 are&nbsp;stored&nbsp;by&nbsp;key_name.<br>&nbsp;</tt></td></tr>
 <tr><td>&nbsp;</td>
-<td width="100%">Methods defined here:<br>
-<dl><dt><a name="StorageByKeyName-__init__"><strong>__init__</strong></a>(self, model, key_name, property_name)</dt><dd><tt>Constructor&nbsp;for&nbsp;Storage.<br>
+<td width="100%"><dl><dt>Method resolution order:</dt>
+<dd><a href="oauth2client.appengine.html#StorageByKeyName">StorageByKeyName</a></dd>
+<dd><a href="oauth2client.client.html#Storage">oauth2client.client.Storage</a></dd>
+<dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
+</dl>
+<hr>
+Methods defined here:<br>
+<dl><dt><a name="StorageByKeyName-__init__"><strong>__init__</strong></a>(self, model, key_name, property_name)</dt><dd><tt>Constructor&nbsp;for&nbsp;<a href="oauth2client.client.html#Storage">Storage</a>.<br>
 &nbsp;<br>
 Args:<br>
 &nbsp;&nbsp;model:&nbsp;db.Model,&nbsp;model&nbsp;class<br>
@@ -249,7 +256,7 @@
 &nbsp;&nbsp;credentials:&nbsp;Credentials,&nbsp;the&nbsp;credentials&nbsp;to&nbsp;store.</tt></dd></dl>
 
 <hr>
-Data descriptors defined here:<br>
+Data descriptors inherited from <a href="oauth2client.client.html#Storage">oauth2client.client.Storage</a>:<br>
 <dl><dt><strong>__dict__</strong></dt>
 <dd><tt>dictionary&nbsp;for&nbsp;instance&nbsp;variables&nbsp;(if&nbsp;defined)</tt></dd>
 </dl>