Remove push to IRC from "readme.md" too

Summary: Brings this in line with other support docs and pushes users toward the modern stuff.

Test Plan: Read documentation.

Reviewers: chad

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D14329

README.md

-**Phabricator** is an open source collection of web applications which help software companies build better software.
+**Phabricator** is a collection of web applications which help software companies build better software.
 
 Phabricator includes applications for:
 
@@ -18,25 +18,13 @@ Phabricator is developed and maintained by [Phacility](http://phacility.com).
 
 ----------
 
-**BUG REPORTS**
+**SUPPORT RESOURCES**
 
-Please update your install to **HEAD** before filing bug reports. Follow our [bug reporting guide](https://secure.phabricator.com/book/phabcontrib/article/bug_reports/) for complete instructions.
+For resources on filing bugs, requesting features, reporting security issues, and getting other kinds of support, see [Support Resources](https://secure.phabricator.com/book/phabricator/article/support/).
 
-**FEATURE REQUESTS**
+**NO PULL REQUESTS!**
 
-We're big fans of feature requests that state core problems, not just 'add this'. We've compiled a short guide to effective upstream requests [here](https://secure.phabricator.com/book/phabcontrib/article/feature_requests/).
-
-**COMMUNITY CHAT**
-
-Please visit our [IRC Channel (#phabricator on FreeNode)](irc://chat.freenode.net/phabricator) to talk with other members of the Phabricator community. There might be someone there who can help you with setup issues or what image to choose for a macro.
-
-**SECURITY ISSUES**
-
-Phabricator participates in HackerOne and may pay out for various issues reported there. You can find out more information on our [HackerOne page](https://hackerone.com/phabricator).
-
-**PULL REQUESTS**
-
-We do not accept pull requests through GitHub. If you would like to contribute code, please read our [Contributor's Guide](https://secure.phabricator.com/book/phabcontrib/article/contributing_code/) for more information.
+We do not accept pull requests through GitHub. If you would like to contribute code, please read our [Contributor's Guide](https://secure.phabricator.com/book/phabcontrib/article/contributing_code/).
 
 **LICENSE**