Refresh docs
diff --git a/docs/epy/toc-oauth2client.client-module.html b/docs/epy/toc-oauth2client.client-module.html
index b6dd090..235f7e3 100644
--- a/docs/epy/toc-oauth2client.client-module.html
+++ b/docs/epy/toc-oauth2client.client-module.html
@@ -22,7 +22,8 @@
      >Error</a><br />    <a target="mainFrame" href="oauth2client.client.Flow-class.html"
      >Flow</a><br />    <a target="mainFrame" href="oauth2client.client.FlowExchangeError-class.html"
      >FlowExchangeError</a><br />    <a target="mainFrame" href="oauth2client.client.MemoryCache-class.html"
-     >MemoryCache</a><br />    <a target="mainFrame" href="oauth2client.client.OAuth2Credentials-class.html"
+     >MemoryCache</a><br />    <a target="mainFrame" href="oauth2client.client.NonAsciiHeaderError-class.html"
+     >NonAsciiHeaderError</a><br />    <a target="mainFrame" href="oauth2client.client.OAuth2Credentials-class.html"
      >OAuth2Credentials</a><br />    <a target="mainFrame" href="oauth2client.client.OAuth2WebServerFlow-class.html"
      >OAuth2WebServerFlow</a><br />    <a target="mainFrame" href="oauth2client.client.SignedJwtAssertionCredentials-class.html"
      >SignedJwtAssertionCredentials</a><br />    <a target="mainFrame" href="oauth2client.client.Storage-class.html"
@@ -41,16 +42,18 @@
   <div class="private">
     <a target="mainFrame" href="oauth2client.client-module.html#_urlsafe_b64decode"
      >_urlsafe_b64decode</a><br />  </div>
-    <a target="mainFrame" href="oauth2client.client-module.html#credentials_from_clientsecrets_and_code"
+    <a target="mainFrame" href="oauth2client.client-module.html#clean_headers"
+     >clean_headers</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#credentials_from_clientsecrets_and_code"
      >credentials_from_clientsecrets_and_code</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#credentials_from_code"
      >credentials_from_code</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#flow_from_clientsecrets"
      >flow_from_clientsecrets</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#verify_id_token"
      >verify_id_token</a><br />  <h2 class="toc">Variables</h2>
     <a target="mainFrame" href="oauth2client.client-module.html#EXPIRY_FORMAT"
-     >EXPIRY_FORMAT</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#HAS_OPENSSL"
-     >HAS_OPENSSL</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#ID_TOKEN_VERIFICATON_CERTS"
+     >EXPIRY_FORMAT</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#HAS_CRYPTO"
+     >HAS_CRYPTO</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#ID_TOKEN_VERIFICATON_CERTS"
      >ID_TOKEN_VERIFICATON_CERTS</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#OOB_CALLBACK_URN"
-     >OOB_CALLBACK_URN</a><br />  <div class="private">
+     >OOB_CALLBACK_URN</a><br />    <a target="mainFrame" href="oauth2client.client-module.html#REFRESH_STATUS_CODES"
+     >REFRESH_STATUS_CODES</a><br />  <div class="private">
     <a target="mainFrame" href="oauth2client.client-module.html#_cached_http"
      >_cached_http</a><br />  </div>
     <a target="mainFrame" href="oauth2client.client-module.html#logger"