Merge pull request #31 from electron/fix-ci

Fix failing CI

.travis.yml

@@ -3,13 +3,13 @@ notifications:
 
 language: node_js
 node_js:
-  - "6"
+  - "9.7.0"
 os:
   - linux
   - osx
 env:
   - TARGET_ARCH=x64
-osx_image: xcode7.3
+osx_image: xcode9.3
 
 script: './script/cibuild'
 

appveyor.yml

@@ -2,7 +2,7 @@ version: "{build}"
 
 clone_depth: 10
 
-os: Visual Studio 2015
+os: Visual Studio 2017
 
 init:
   - git config --global core.autocrlf input
@@ -11,7 +11,7 @@ platform:
   - x64
 
 install:
-  - cmd: SET PATH=C:\Program Files (x86)\MSBuild\14.0\bin\;%PATH%
+  - cmd: SET PATH=C:\Program Files (x86)\MSBuild\15.0\bin\;%PATH%
   - cmd: SET PATH=C:\python27;%PATH%
   - cmd: bash script/cibuild