update to Play JSON 2.5.2

Author: Nick Stanchenko

README.md

@@ -10,7 +10,8 @@ Compared to the built-in macros, this project brings support for:
 - recursive types ;
 - polymorphic types.
 
-The artifacts are built for Scala 2.11, Play 2.4 and Shapeless 2.3.0.
+The artifacts are built for Scala 2.11, Play 2.5.x and Shapeless 2.3.0.
+For Play 2.4.x compatibility see version `3.2` and below.
 
 ## Usage
 

build.sbt

@@ -10,7 +10,7 @@ libraryDependencies ++= Seq(
   "com.chuusai" %% "shapeless" % "2.3.0",
   "org.scalatest" %% "scalatest" % "2.2.6" % Test,
   "org.scalacheck" %% "scalacheck" % "1.12.5" % Test,
-  "com.typesafe.play" %% "play-json" % "2.4.6"
+  "com.typesafe.play" %% "play-json" % "2.5.2"
 )
 
 publishTo := {