Update README.md

Author: benjchristensen

src/main/java/rx/internal/util/unsafe/README.md

@@ -2,7 +2,7 @@ This package contains code that relies on sun.misc.Unsafe. Before using it you M
 
 Much of the code in this package comes from or is inspired by the JCTools project: https://github.com/JCTools/JCTools
 
-Once JCTools publishes artifacts (https://github.com/JCTools/JCTools/issues/17) RxJava may add JCTools as a "shadow" dependency. 
+JCTools has now published artifacts (https://github.com/JCTools/JCTools/issues/17) so RxJava could add JCTools as a "shadow" dependency (https://github.com/ReactiveX/RxJava/issues/1735). 
 RxJava has a "zero dependency" policy for the core library, so if we do add it as a dependency, it won't be an externally visible dependency that results in a separate jar.
 
 The license for the JCTools code is https://github.com/JCTools/JCTools/blob/master/LICENSE