Update README.rst to show -c auth only option

maxwelleite · Sep 8, 2013 · 32f6a3d · 32f6a3d
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diff --git a/README.rst b/README.rst
@@ -18,6 +18,7 @@ Usage
   -a account_file : path to google account ident data (optional)
                     account_file format:  <Google username>
                                           <Google password>
+  -c              : establish and store login credentials, then exit
   -h              : display this help
 
 Google accounts with 2 step verification enabled need to use an