added appveyor.yml to repository

appveyor.yml

@@ -0,0 +1,23 @@
+version: 1.0.{build}
+init:
+- cmd: dir
+build:
+  verbosity: minimal
+after_build:
+- cmd: >-
+    IF EXIST r4w_alpha-1.0.zip del r4w_alpha-1.0.zip
+    IF EXIST r4w rmdir /S /Q r4w
+    mkdir r4w
+    copy src\r4w\bin\x86\Debug\*.dll r4w
+    copy src\r4w\bin\x86\Debug\*.exe r4w
+    xcopy /s /Y /I src\r4w\media r4w\media
+    xcopy /s /Y /I src\r4w\scripts r4w\scripts
+    copy r2pipe\bin\Debug\*.dll r4w
+    del r4w\*vshost.exe
+    7z x src\r4w\radare2-w64-1.1.0-git.zip -or4w
+    7z a r4w_alpha-1.0.zip r4w
+    7z l r4w_alpha-1.0.zip
+    dir
+artifacts:
+- path: '*.zip'
+  name: zip