meta: Add Community section to readme.md

Includes a link to es-discuss and the IRC channel.

Author: bterlson

README.md

@@ -1,10 +1,11 @@
+
 ECMAScript
 ====
 
 ## This repo
 
 This repository contains the source for the current draft of ECMA-262,
-the ECMAScript® Language Specification.
+the ECMAScript® Language Specification.
 
 This source is processed to obtain a human-readable version,
 which you can view [here](https://tc39.github.io/ecma262/).
@@ -25,3 +26,8 @@ Please see [Contributing to ECMAScript](/CONTRIBUTING.md) for the most up-to-dat
 ## Developing the Specification
 
 After cloning, do `npm install` to set up your environment. You can then do `npm run build` to build the spec or `npm run watch` to set up a continuous build. The results will appear in the `out` directory, which you can use `npm run clean` to delete.
+
+## Community
+
+* [Es-discuss mailing list](https://esdiscuss.org): Mailing list for ECMAScript discussions
+* IRC: #tc39 on Freenode ([instructions](https://freenode.net/kb/answer/chat))