Fix travis osx image specification.

jondegenhardt · jondegenhardt · commit ab695939d77a · 2017-04-28T23:31:12.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -2,7 +2,7 @@ sudo: false
 os:
 - linux
 - osx
-  osx_image8.2
+osx_image: xcode8.2
 language: d
 d:
 - ldc
