Auto merge of #281 - servo:windows-ci, r=Manishearth

Enable AppVeyor.

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Author: bors-servo

appveyor.yml

@@ -0,0 +1,28 @@
+version: 1.0.{build}
+
+environment:
+  PATH: 'C:\msys64\mingw64\bin;C:\msys64\usr\bin\;%PATH%'
+  MSYSTEM: 'MSYS'
+  MSYS: 'winsymlinks=lnk'
+  TARGET: 'nightly-x86_64-pc-windows-gnu'
+
+platform:
+  - x64
+
+install:
+  - bash -lc "echo $MSYSTEM; pacman --needed --noconfirm -Sy pacman-mirrors"
+  - bash -lc "pacman --noconfirm -Sy"
+  - bash -lc "pacman -Sy --needed --noconfirm git mingw-w64-x86_64-toolchain tar make python2-setuptools"
+  - bash -lc "easy_install-2.7 pip virtualenv"
+  - bash -lc "mv /mingw64/bin/python2.exe /mingw64/bin/python2-mingw64.exe"
+  - bash -lc "mv /mingw64/bin/python2.7.exe /mingw64/bin/python2.7-mingw64.exe"
+  - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-${env:TARGET}.exe" -FileName "rust-install.exe"
+  - ps: .\rust-install.exe /VERYSILENT /NORESTART /DIR="C:\rust" | Out-Null
+  - ps: $env:PATH="$env:PATH;C:\rust\bin"
+  - rustc -vV
+  - cargo -vV
+build_script:
+  - cmd: >-
+      set MSYSTEM=MINGW64
+
+      bash -lc "cd $APPVEYOR_BUILD_FOLDER; cargo build && cargo test"