Point people to npm Windows instructions

Author: gaearon

ISSUE_TEMPLATE.md

@@ -2,7 +2,11 @@ If you are reporting a bug, please fill in below. Otherwise feel free to remove
 
 ### Can you reproduce the problem with latest npm?
 
-Run:
+Many errors, especially related to "missing modules", are due to npm bugs.
+
+If you're using Windows, [follow these instructions to update npm](https://github.com/npm/npm/wiki/Troubleshooting#upgrading-on-windows).
+
+If you're using OS X or Linux, run this to update npm:
 
 ```
 npm install -g npm@latest
@@ -12,7 +16,7 @@ rm -rf node_modules
 npm install
 ```
 
-and try to reproduce the issue again.
+Then try to reproduce the issue again.
 
 Can you still reproduce it?