Add sample project for play-2.6

samples/play-2.6/.gitignore

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+logs
+target
+/.idea
+/.idea_modules
+/.classpath
+/.project
+/.settings
+/RUNNING_PID

samples/play-2.6/LICENSE

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+This software is licensed under the Apache 2 license, quoted below.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this project except in compliance with
+the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
+language governing permissions and limitations under the License.

samples/play-2.6/README

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+This is your new Play application
+=================================
+
+This file will be packaged with your application when using `activator dist`.
+
+There are several demonstration files available in this template.
+
+Controllers
+===========
+
+- HomeController.scala:
+
+  Shows how to handle simple HTTP requests.
+
+- AsyncController.scala:
+
+  Shows how to do asynchronous programming when handling a request.
+
+- CountController.scala:
+
+  Shows how to inject a component into a controller and use the component when
+  handling requests.
+
+Components
+==========
+
+- Module.scala:
+
+  Shows how to use Guice to bind all the components needed by your application.
+
+- Counter.scala:
+
+  An example of a component that contains state, in this case a simple counter.
+
+- ApplicationTimer.scala:
+
+  An example of a component that starts when the application starts and stops
+  when the application stops.
+
+Filters
+=======
+
+- Filters.scala:
+
+  Creates the list of HTTP filters used by your application.
+
+- ExampleFilter.scala
+
+  A simple filter that adds a header to every response.

samples/play-2.6/app/controllers/ExampleController.scala

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+package controllers
+
+import javax.inject._
+import play.api.mvc.{Action, AbstractController, ControllerComponents}
+import io.kanaka.monadic.dsl._, compat.cats._
+import scala.concurrent.ExecutionContext
+
+import scala.concurrent.Future
+/**
+  * @author Valentin Kasas
+  */
+class ExampleController @Inject() (controllerComponents: ControllerComponents)(implicit ec: ExecutionContext) extends AbstractController(controllerComponents) {
+
+  def index = Action.async {
+    req =>
+      for {
+        i <- Future.successful(Right(42)) ?| NotFound
+      } yield Ok(i.toString)
+  }
+
+}

samples/play-2.6/build.sbt

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+name := """play-2.6"""
+
+version := "1.0-SNAPSHOT"
+
+lazy val root = (project in file(".")).enablePlugins(PlayScala)
+
+scalaVersion := "2.12.3"
+
+libraryDependencies ++= Seq(
+  jdbc,
+  cache,
+  ws,
+  "org.scalatestplus.play" %% "scalatestplus-play" % "3.1.1" % Test,
+  "io.kanaka" %% "play-monadic-actions" % "2.0.2-SNAPSHOT",
+  "io.kanaka" %% "play-monadic-actions-cats" % "2.0.2-SNAPSHOT",
+  "org.typelevel" %% "cats-core" % "1.0.0-MF"
+
+)
+