Add a readme and a note that we prefer discussions in mail over issues.

CONTRIBUTING.md

@@ -8,3 +8,5 @@ If nobody has, [open an issue on GitHub](https://github.com/wixtoolset/issues/is
 * A description of what you expected to happen.
 
 Issues are triaged at weekly online meetings, generally held Fridays at noon Pacific time (UTC-7/UTC-8). Meeting requests are sent to the [wix-devs](http://localhost:8080/documentation/mailinglist/#wix-devs) mailing list.
+
+Note that discussions are best held on the mailing lists, not in issues. Please do not open issues requesting support or debugging help.

README.md

@@ -0,0 +1,5 @@
+This is the repo for bugs and features requests for the WiX Toolset.
+
+[Search or open issues](https://github.com/wixtoolset/issues/issues)
+
+For the WiX toolset source code, see the [wix3](https://github.com/wixtoolset/wix3) and [wix4](https://github.com/wixtoolset/wix4) repos.