add check notes

JohnMount · JohnMount · commit d3ed9ca4f30c · 2018-06-13T05:44:23.000-07:00
diff --git a/cran-comments.md b/cran-comments.md
@@ -3,6 +3,8 @@
 ## Test environments
 
   * Windows
+  * using R Under development (unstable) (2018-06-11 r74889)
+  * using platform: x86_64-w64-mingw32 (64-bit)
 
   * OSX 
   * using R version 3.5.0 (2018-04-23)
