Updated osx version on travis. Last build hit a bug in ruby.

99356db2 · Dilawar Singh · 0adc44ff · 99356db2
Commit 99356db2 authored 7 years ago by Dilawar Singh
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,11 @@ os:
    - linux
    - osx

+allow_failure:
+    - osx
+
+osx_image : xcode8
+
 branches:
    only:
        - master