Add Gitter chat to README, editorconfig and info about the plugin

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+
+[*.properties]
+charset = latin1
+
+[*.{yaml, yml}]
+indent_size = 2

README.md

@@ -1,6 +1,12 @@
 # Folder-based Authorization for Jenkins
 
 [![Build Status](https://ci.jenkins.io/job/Plugins/job/folder-auth-plugin/job/master/badge/icon)](https://ci.jenkins.io/job/Plugins/job/folder-auth-plugin/job/master/)
+[![Gitter](https://badges.gitter.im/jenkinsci/role-strategy-plugin.svg)](https://gitter.im/jenkinsci/role-strategy-plugin?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
 
-This plugin adds an authorization strategy for Jenkins that works on Cloudbees' Folder plugin. Permissions given to a user
-for a folder are inherited by all its children.
+This plugin adds an authorization strategy for Jenkins that works on Cloudbees' Folder plugin.
+Permissions given to a user for a folder are inherited by all its children.
+
+You can chat with us, share your feedback and ask questions on our [Gitter chat](https://gitter.im/jenkinsci/role-strategy-plugin).
+We share the channel with the [Role Strategy Plugin](https://github.com/jenkinsci/role-strategy-plugin)
+because this plugin also follows a similar, though simplified, 'role-based' model and was created to 
+avoid the performance penalty of using regular expressions.

src/main/resources/index.jelly

@@ -0,0 +1,7 @@
+<?jelly escape-by-default='true'?>
+<div>
+    This plugin allows easy configuration if user permissions for
+    <a href="https://wiki.jenkins.io/display/JENKINS/CloudBees+Folders+Plugin" target="_blank">Folders</a>
+    and the items within them. The permissions for each folder apply to all of its children.
+    This plugin also allows giving users permissions that are applicable everywhere in Jenkins.
+</div>