Since Play Framework 2.3.x, Play WS is a dependent library. Reference:
http://playframework.com/documentation/2.3.x/Migration23
How to include it in the SBT project?
Answer:
"com.typesafe.play" %% "play-ws" % "2.3.1"
Guys who stumbled upon it, it is better to add the following line:
libraryDependencies += javaWs
For Build.scala you need import play.Play.autoImport._ use the ws template. In build.sbt you can use it right off the bat.
Build.scala
import play.Play.autoImport._
ws
build.sbt