Add link to PDF docs.

diff --git a/docs/documentation.rst b/docs/documentation.rst
index f07460b72b601835724527a263264dbb5a10395a..c1cec79f117e35d82a7eb2cd7b6d59329cf6259f 100644 (file)
--- a/docs/documentation.rst
+++ b/docs/documentation.rst
@@ -10,8 +10,10 @@ Tornado Documentation
    integration
    utilities
    releases
-   
-   
+
+This documentation is also available in `PDF and Epub formats
+<https://readthedocs.org/projects/tornado/downloads/>`_.
+
 
 Indices and tables
 ==================