[evolution] I#115 - Update win32/readme.txt

[Milan Crha <mcrha src gnome org>]

commit 955d030287a65942003b964d0af1ea0d5d7a81a7
Author: Milan Crha <mcrha redhat com>
Date:   Tue Sep 4 15:44:36 2018 +0200

    I#115 - Update win32/readme.txt
    
    Closes https://gitlab.gnome.org/GNOME/evolution/issues/115

 win32/readme.txt | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/win32/readme.txt b/win32/readme.txt
index e8aa73bd82..936ab05821 100644
--- a/win32/readme.txt
+++ b/win32/readme.txt
@@ -1,3 +1,10 @@
+**************************************************
+* Note the build itself is outdated also due to  *
+* no WebKit2 of WebKitGTK+ for Windows.          *
+* It is waiting for:                             *
+* https://bugs.webkit.org/show_bug.cgi?id=137488 *
+**************************************************
+
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 *** Caution - this work is still in progress ***
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