[RELEASE] Released version 1.5.7

Released version 1.5.7 with the following main changes :
    - BUG/MEDIUM: regex: fix pcre_study error handling
    - BUG/MINOR: log: fix request flags when keep-alive is enabled
    - MINOR: ssl: add fetchs 'ssl_c_der' and 'ssl_f_der' to return DER formatted certs
    - MINOR: ssl: add statement to force some ssl options in global.
    - BUG/MINOR: ssl: correctly initialize ssl ctx for invalid certificates
    - BUG/MEDIUM: http: don't dump debug headers on MSG_ERROR
    - BUG/MAJOR: cli: explicitly call cli_release_handler() upon error
    - BUG/MEDIUM: tcp: fix outgoing polling based on proxy protocol
    - BUG/MEDIUM: tcp: don't use SO_ORIGINAL_DST on non-AF_INET sockets
diff --git a/README b/README
index d111b43..b58df1e 100644
--- a/README
+++ b/README
@@ -1,9 +1,9 @@
                          ----------------------
                              HAProxy how-to
                          ----------------------
-                             version 1.5.6
+                             version 1.5.7
                              willy tarreau
-                               2014/10/18
+                               2014/10/30
 
 
 1) How to build it