added the missing file

tests/src/test/scala-2.11+/cats/tests/ExtraRegressionSuite.scala

@@ -0,0 +1,25 @@
+package cats
+package tests
+
+
+import ExtraRegressionSuite._
+
+class ExtraRegressionSuite extends CatsSuite {
+  /**
+   * Placed here to work around scala/bug#6260 on scala 2.10
+   */
+  test("#1802 duplicated method name") {
+    Show[First[String]]
+  }
+}
+
+
+object ExtraRegressionSuite {
+  final case class First[A](getFirst: A) extends AnyVal
+  object First {
+    implicit def showInstance[A](implicit ev: Show[A]): Show[First[A]] = new Show[First[A]] {
+      override def show(f: First[A]): String = s"First(${ev.show(f.getFirst)})"
+    }
+  }
+
+}