Update osx_image to xcode9.2

Charleneluo · Charleneluo · commit ebd7efde82aa · 2018-02-01T19:06:39.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -33,22 +33,27 @@ matrix:
       env:
         - MB_PYTHON_VERSION=3.6
     - os: osx
+      osx_image: xcode9.2
       language: generic
       env:
         - MB_PYTHON_VERSION=2.7
     - os: osx
+      osx_image: xcode9.2
       language: generic
       env:
         - MB_PYTHON_VERSION=3.3
     - os: osx
+      osx_image: xcode9.2
       language: generic
       env:
         - MB_PYTHON_VERSION=3.4
     - os: osx
+      osx_image: xcode9.2
       language: generic
       env:
         - MB_PYTHON_VERSION=3.5
     - os: osx
+      osx_image: xcode9.2
       language: generic
       env:
         - MB_PYTHON_VERSION=3.6
