use a fixed nodejs version for appveyor

mr-c · mr-c · commit 530b7d0ff135 · 2018-03-10T19:54:58.000+02:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,7 +1,7 @@
 version: .{build}-{branch}
 
 environment:
-  nodejs_version: "MAJOR"
+  nodejs_version: "8"
 
   SYSTEMROOT: "C:\\WINDOWS"
 
