2014-11-14: updated srfi

updated srfi

diff --git a/docs/srfi.org b/docs/srfi.org
--- a/docs/srfi.org
+++ b/docs/srfi.org
@@ -481,6 +481,8 @@ The wisp code also contains a general wi
 
 To allow for easy re-implementation, the next chapter contains a test-suite with common wisp constructs and their scheme counterparts.
 
+The wissp implementation can be found at http://draketo.de/proj/wisp.
+
 ** The generic wisp preprocessor (code)
 
 TODO: Include the code from http://draketo.de/proj/wisp