Cache mingw in AppVeyor

xzyfer · xzyfer · commit ba054b89bcfd · 2015-10-08T22:47:32.000+11:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -16,6 +16,7 @@ environment:
 
 cache:
   - C:\Ruby%ruby_version%\lib\ruby\gems
+  - C:\mingw64
 
 install:
   - git clone https://github.com/sass/sassc.git
