Upgrade Play

Author: mkurz

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("com.dwijnand"      % "sbt-travisci" % "1.2.0")
-addSbtPlugin("com.typesafe.play" % "sbt-plugin"   % "2.8.7")
+addSbtPlugin("com.typesafe.play" % "sbt-plugin"   % "2.8.11")
 addSbtPlugin("com.typesafe.sbt"  % "sbt-digest"   % "1.1.4")
 addSbtPlugin("com.typesafe.sbt"  % "sbt-gzip"     % "1.0.2")
 addSbtPlugin("com.typesafe.sbt"  % "sbt-stylus"   % "1.1.0")