Merge pull request #11148 from mackenza/patch-1

added Slack channel and re-ordered contact order

Author: ryanstewart

README.md

@@ -111,7 +111,9 @@ Not sure you needed the exclamation point there, but we like your enthusiasm.
 
 #### Contact info
 
+* **Slack:** [Brackets on Slack](https://brackets.slack.com)
+* **Developers mailing list:** http://groups.google.com/group/brackets-dev
 * **Twitter:** [@brackets](https://twitter.com/brackets)
 * **Blog:** http://blog.brackets.io/
 * **IRC:** [#brackets on freenode](http://webchat.freenode.net/?channels=brackets)
-* **Developers mailing list:** http://groups.google.com/group/brackets-dev
+