Add support for AppVeyor Windows CI build

appveyor.yml

@@ -0,0 +1,25 @@
+os: Visual Studio 2015
+
+platform: x64
+
+install:
+  - '"C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64'
+  - choco install strawberryperl
+  - SET PATH=C:\strawberry\c\bin;C:\strawberry\perl\site\bin;C:\strawberry\perl\bin;%PATH%
+  - git clone https://github.com/rakudo/rakudo.git %APPVEYOR_BUILD_FOLDER%\..\rakudo
+  - cd %APPVEYOR_BUILD_FOLDER%\..\rakudo
+  - perl Configure.pl --gen-moar=HEAD --gen-nqp
+  - nmake install
+  - SET PATH=%APPVEYOR_BUILD_FOLDER%\..\rakudo\install\bin;%PATH%
+  - cd %APPVEYOR_BUILD_FOLDER%
+
+build: off
+
+test_script:
+  - prove -v -e "perl6 -Ilib" t/
+  - perl6 -Ilib bin/zef --verbose install .
+  - SET PATH=%APPVEYOR_BUILD_FOLDER%\..\rakudo\install\share\perl6\site\bin;%PATH%
+  - cd %APPVEYOR_BUILD_FOLDER%\..
+  - zef --verbose --force install Zef
+
+shallow_clone: true