Dominoes - Update to Scala 2.12.1 - refs #235. Add topics to config.json - refs #125. Change Suite to Test to remain consistent with other exercises.

Author: ricemery

config.json

@@ -561,6 +561,10 @@
       "slug": "dominoes",
       "difficulty": 1,
       "topics": [
+         "Lists",
+         "Optional values",
+         "Tuples",
+         "Games"
       ]
 		},
     {

exercises/dominoes/build.sbt

@@ -1,3 +1,4 @@
-scalaVersion := "2.11.8"
+scalaVersion := "2.12.1"
+
+libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.1" % "test"
 
-libraryDependencies += "org.scalatest" % "scalatest_2.11" % "2.2.5" % "test"

exercises/dominoes/src/test/scala/DominoesSuite.scala renamed to exercises/dominoes/src/test/scala/DominoesTest.scala

@@ -1,6 +1,6 @@
 import org.scalatest.{FunSuite, Matchers}
 
-class DominoesSuite extends FunSuite with Matchers {
+class DominoesTest extends FunSuite with Matchers {
 
   test("empty input = empty output") {
     check(List(), true)