#188 - Publish for Scala 2.12.0-RC2.

- Scala version upgraded from 2.12.0-RC1 to 2.12.0-RC2,
- ScalaJS version upgraded from 0.6.12 to 0.6.13.

build.sbt

@@ -13,7 +13,7 @@ val ScalatestVersion = "3.0.0"
 val appSettings = Seq(
     organization := Org,
     scalaVersion := "2.11.8",
-    crossScalaVersions := Seq("2.10.6", "2.11.8", "2.12.0-RC1"),
+    crossScalaVersions := Seq("2.10.6", "2.11.8", "2.12.0-RC2"),
     fork in Test := false,
     publishMavenStyle := true,
     publishArtifact in Test := false,

project/plugins.sbt

@@ -4,4 +4,4 @@ addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.1")
 
 addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.3")
 
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.12")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.13")