Add link to deprecation warning

README.md

@@ -16,7 +16,7 @@ Long-time users should know that ido-completing-read+ version 4.0 is a
 major update. The previously separate ido-ubiquitous package has been
 merged into ido-completing-read+, which now provides all the features
 of both packages. The distinction between "new" and "old" default
-selection styles has been eliminated (see FAQ for details), and the
+selection styles has been eliminated (see [FAQ][1] for details), and the
 override system has been accordingly simplified into just a blacklist
 and a whitelist. If you have previously customized any ido-ubiquitous
 options, be sure to check out 
@@ -29,6 +29,8 @@ liking.
 This short-lived ido-describe-fns package has likewise been subsumed
 into this one.
 
+[1]: #why-does-ret-sometimes-not-select-the-first-completion-on-the-list--why-is-there-an-empty-entry-at-the-beginning-of-the-completion-list--what-happened-to-old-style-default-selection
+
 # How to enable ido in as many places as possible #
 
 If you are using this package, you probably want to enable ido

ido-ubiquitous.el

@@ -47,7 +47,8 @@ be updated until you restart Emacs.")
 
 (require 'ido-completing-read+)
 
-(display-warning 'ido-ubiquitous "The ido-ubiquitous package is now redundant. All functionality, including ido-ubiquitous-mode, has been merged into the ido-completing-read+ package. You should replace ido-ubiquitous with ido-completing-read+ in your Emacs config.")
+(display-warning 'ido-ubiquitous "The ido-ubiquitous package is now redundant. All functionality, including ido-ubiquitous-mode, has been merged into the ido-completing-read+ package. You should replace ido-ubiquitous with ido-completing-read+ in your Emacs config. For more information, see:
+https://github.com/DarwinAwardWinner/ido-ubiquitous#version-40-changes")
 
 (define-obsolete-function-alias 'completing-read-ido-ubiquitous 'ido-completing-read+
   "ido-completing-read+ 4.0")