Update the release date and version table

Author: zsxwing

CHANGES.md

@@ -1,6 +1,6 @@
 # RxScala Releases
 
-## Version 0.25.1 - TODO ([Maven Central](http://search.maven.org/#search%7Cga%7C1%7C%22rxscala%22%20AND%20g%3A%22io.reactivex%22))
+## Version 0.25.1 - December 18th 2015 ([Maven Central](http://search.maven.org/#search%7Cga%7C1%7C%22rxscala%22%20AND%20g%3A%22io.reactivex%22))
 
 This release upgrades RxJava to 1.0.17 along with several experimental APIs including new `interval` overloads, `concatEager`, `concatMapEager`, `flattenDelayError` and `BlockingObservable.subscribe`.
 

README.md

@@ -96,6 +96,7 @@ you should use the corresponding version of RxJava as the following table:
 
 | RxScala version | Compatible RxJava version |
 | ------------------- | ------------------------- |
+| 0.25.1 | 1.0.17+ |
 | 0.25.0 | 1.0.11+ |
 | 0.24.1 | 1.0.8+ |
 | 0.24.0 | 1.0.7+ |