appveyor.yml in textbringer-0.3.1 vs appveyor.yml in textbringer-0.3.2

- old
+ new

@@ -11,7 +11,9 @@
 deploy: off
 environment:
   UPLOAD_TO_CODECOV: 1
   SSL_CERT_FILE: C:\projects\textbringer\cacert.pem
   matrix:
-    - ruby_version: "23"
-    - ruby_version: "23-x64"
+    - ruby_version: "24"
+    - ruby_version: "24-x64"
+    - ruby_version: "25"
+    - ruby_version: "25-x64"