Update README.md

README.md

@@ -3,6 +3,8 @@ predicates [![Build Status](https://travis-ci.org/jackfirth/predicates.svg?branc
 
 [Documentation](http://pkg-build.racket-lang.org/doc/predicates/index.html)
 
+*Deprecated* - For basic logic combinators, use `conjoin`, `disjoin`, and `negate` from `racket/function` instead. For predicate-constructing variants of `eq?` and friends, use a simple lambda shorthand library like `fancy-app` instead. For the more complex combinators, consider them unmaintained.
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 A racket package for creating predicates in a point-free style.
 
 A *predicate* is a function that takes one argument and returns either true or false. You can think of it as a question, such as `even?` which returns true for even numbers and false for odd numbers. This package provides several tools for working with predicates.