Update support readme for webpack1 wiki

BeniCheni · BeniCheni · commit 736ac2645d83 · 2018-05-12T21:09:04.000-07:00
diff --git a/README.md b/README.md
@@ -287,6 +287,8 @@ We consider webpack to be a low-level tool used not only individually but also l
 
 If you're just getting started, take a look at [our new docs and concepts page](https://webpack.js.org/concepts/). This has a high level overview that is great for beginners!!
 
+Looking for webpack1 docs? Please check out the old [wiki](https://github.com/webpack/docs/wiki/contents), but note that this deprecated version is no longer supported.
+
 If you want to discuss something or just need help, [here is our Gitter room](https://gitter.im/webpack/webpack) where there are always individuals looking to help out!
 
 If you are still having difficulty, we would love for you to post
