Add a dependency declaration into your Build.scala or build.sbt file:

• for Play2.1.x

    "jp.t2v" %% "play2.auth"      % "0.10.1",
    "jp.t2v" %% "play2.auth.test" % "0.10.1" % "test"
  

For example your Build.scala might look like this:

  val appDependencies = Seq(
    "jp.t2v" %% "play2.auth"      % "0.10.1",
    "jp.t2v" %% "play2.auth.test" % "0.10.1" % "test"
  )

  val main = play.Project(appName, appVersion, appDependencies)

You don't need to create a play.plugins file.