docs: add node 10 async/await notice

README.md

@@ -57,6 +57,9 @@ To avoid weird behavior with express:
 1. Make sure you require `express-http-context` in the first row of your app. Some popular packages use async which breaks CLS.
 1. If you are using `body-parser` and context is getting lost, register it in express before you register `express-http-context`'s middleware.
 
+For users of Node 10
+1. Node 10.0.x - 10.3.x are not supported.  V8 version 6.6 introduced a bug breaks async_hooks during async/await.  Node 10.4.x uses V8 v6.7 in which the bug is fixed.  See: https://github.com/nodejs/node/issues/20274.
+
 See [Issue #4](https://github.com/skonves/express-http-context/issues/4) for more context.  If you find any other weird behaviors, please feel free to open an issue.
 
 ## Contributors