Merge pull request #1409 from atetubou/appveyor

Add appveyor.yml for build & test on windows
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 0000000..c8e1a9d
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,14 @@
+version: 1.0.{build}
+image: Visual Studio 2017
+build_script:
+- cmd: >-
+    call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
+
+    python configure.py --bootstrap
+
+    ninja.bootstrap.exe all
+
+    ninja_test
+
+    python misc/ninja_syntax_test.py
+test: off