Added AppVeyor support

appveyor.yml

@@ -0,0 +1,42 @@
+environment:
+  matrix:
+  - JULIAVERSION: "julialang/bin/winnt/x86/0.4/julia-0.4-latest-win32.exe"
+  - JULIAVERSION: "julialang/bin/winnt/x64/0.4/julia-0.4-latest-win64.exe"
+  - JULIAVERSION: "julianightlies/bin/winnt/x86/julia-latest-win32.exe"
+  - JULIAVERSION: "julianightlies/bin/winnt/x64/julia-latest-win64.exe"
+
+branches:
+  only:
+    - master
+    - /release-.*/
+
+skip_commits:
+  message: /\[av skip\]/
+
+notifications:
+  - provider: Email
+    on_build_success: false
+    on_build_failure: false
+    on_build_status_changed: false
+
+install:
+# If there's a newer build queued for the same PR, cancel this one
+  - ps: if ($env:APPVEYOR_PULL_REQUEST_NUMBER -and $env:APPVEYOR_BUILD_NUMBER -ne ((Invoke-RestMethod `
+        https://ci.appveyor.com/api/projects/$env:APPVEYOR_ACCOUNT_NAME/$env:APPVEYOR_PROJECT_SLUG/history?recordsNumber=50).builds | `
+        Where-Object pullRequestId -eq $env:APPVEYOR_PULL_REQUEST_NUMBER)[0].buildNumber) { `
+        throw "There are newer queued builds for this pull request, failing early." }
+# Download most recent Julia Windows binary
+  - ps: (new-object net.webclient).DownloadFile(
+        $("http://s3.amazonaws.com/"+$env:JULIAVERSION),
+        "C:\projects\julia-binary.exe")
+# Run installer silently, output to C:\projects\julia
+  - C:\projects\julia-binary.exe /S /D=C:\projects\julia
+
+build_script:
+# Need to convert from shallow to complete for Pkg.clone to work
+  - IF EXIST .git\shallow (git fetch --unshallow)
+  - C:\projects\julia\bin\julia -e "versioninfo();
+      Pkg.clone(pwd(), \"DataFramesMeta\"); Pkg.build(\"DataFramesMeta\")"
+
+test_script:
+  - C:\projects\julia\bin\julia --check-bounds=yes -e "Pkg.test(\"DataFramesMeta\")"