Upgrade to Scala.js 1.0.0-RC2 (#393)

Author: FabioPinheiro

.travis.yml

@@ -12,11 +12,11 @@ jdk:
   - openjdk8
 env:
   - SCALAJS_VERSION=0.6.28
-  - SCALAJS_VERSION=1.0.0-RC1
+  - SCALAJS_VERSION=1.0.0-RC2
 matrix:
   exclude:
     - scala: 2.10.7
-      env: SCALAJS_VERSION=1.0.0-RC1
+      env: SCALAJS_VERSION=1.0.0-RC2
   include:
     - scala: 2.12.10
       env: SCALAJS_VERSION=0.6.28