Added note to the README about centralized Errbit app [ci skip]

README.md

@@ -125,35 +125,43 @@ Upgrading
 If we change the way that data is stored, this will run any migrations to bring your database up to date.
 
 
-Lighthouseapp Integration
--------------------------
+Issue Trackers
+--------------
+
+**Lighthouseapp Integration**
 
 * Account is the name of your subdomain, i.e. **litcafe** for project at http://litcafe.lighthouseapp.com/projects/73466-face/overview
 * Errbit uses token-based authentication. Get your API Token or visit [http://help.lighthouseapp.com/kb/api/how-do-i-get-an-api-token](http://help.lighthouseapp.com/kb/api/how-do-i-get-an-api-token) to learn how to get it.
 * Project id is number identifier of your project, i.e. **73466** for project at http://litcafe.lighthouseapp.com/projects/73466-face/overview
 
-Redmine Integration
--------------------------
+**Redmine Integration**
 
 * Account is the host of your redmine installation, i.e. **http://redmine.org**
 * Errbit uses token-based authentication. Get your API Key or visit [http://www.redmine.org/projects/redmine/wiki/Rest_api#Authentication](http://www.redmine.org/projects/redmine/wiki/Rest_api#Authentication) to learn how to get it.
 * Project id is an identifier of your project, i.e. **chilliproject** for project at http://www.redmine.org/projects/chilliproject
 
-Pivotal Tracker Integration
--------------------------
+**Pivotal Tracker Integration**
 
 * Errbit uses token-based authentication. Get your API Key or visit [http://www.pivotaltracker.com/help/api](http://www.pivotaltracker.com/help/api) to learn how to get it.
 * Project id is an identifier of your project, i.e. **24324** for project at http://www.pivotaltracker.com/projects/24324
 
-Thoughtworks Mingle Integration
--------------------------------
+**Thoughtworks Mingle Integration**
 
 * Account is the host of your mingle installation. i.e. **https://mingle.example.com**  *note*: You should use SSL if possible.
 * Errbit uses 'sign-in name' & password authentication. You may want to set up an **errbit** user with limited rights.
 * Project id is the identifier of your project, i.e. **awesomeapp** for project at https://mingle.example.com/projects/awesomeapp
 * Card properties are comma separated key value pairs. You must specify a 'card_type', but anything else is optional. i.e. card_type = Defect, status = Open, priority = Essential
 
 
+Errbit for Errbit
+-----------------
+
+There is a central Errbit instance running on heroku at **http://errbit-central.heroku.com**.
+Your Errbit instance will send it's errors there by default.
+If you are running vanilla Errbit, it would be really helpful if you could leave these settings unchanged.
+However, if you fork Errbit and are making lots of changes, please do point your errors back to your own instance of Errbit.
+
+
 TODO
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