Improve style and add dynamic badges on README.md

Add some dynamic badges for displaying current release version
and testing status.

Also added links to the documentation and relevant pages.

Improved header style for better readability on GitHub.

README.md

@@ -6,17 +6,42 @@
 
 <h1 align="center">Request Tracker for Incidente Response (RTIR)</h1>
 
-RT for Incident Response is an open source, industrial-grade
+<p align="center">
+  RT for Incident Response is an open source, industrial-grade
 incident-handling tool designed to provide a simple, effective
-workflow for members of CERT and CSIRT teams. It allows team members
+workflow for members of CERT and CSIRT teams.
+  <br>
+  <a href="https://docs.bestpractical.com/rtir/latest/index.html"><strong>Explore RT docs »</strong></a>
+  <br>
+  <br>
+  <a href="https://docs.bestpractical.com/release-notes/rtir/index.html">Release Notes</a>
+  ·
+  <a href="https://forum.bestpractical.com/">Community Forum</a>
+  ·
+  <a href="https://rt-wiki.bestpractical.com">Public Wiki</a>
+  ·
+  <a href="https://bestpractical.com/blog/">Blog</a>
+  ·
+  <a href="https://bestpractical.com/pricing">Hosting & Support</a>
+  <br /><br />
+  <a href="https://github.com/bestpractical/rtir/releases">
+      <img src="https://img.shields.io/github/v/release/bestpractical/rtir" alt="Latest release" />
+  </a>
+  <a href="https://github.com/bestpractical/rtir/actions">
+      <img src="https://img.shields.io/github/actions/workflow/status/bestpractical/rtir/github-action.yml?branch=5.0-trunk&label=Test%20All" alt="Build status" />
+  </a>
+</p>
+<p align="center">It allows team members
 to track, respond to and deal with reported incidents and features a
 number of tools to make common operations quick and easy.  RTIR is
 built on top of RT, which is also available for free from Best
-Practical Solutions at [http://www.bestpractical.com/rt/](http://www.bestpractical.com/rt/).
+Practical Solutions at <a href="http://www.bestpractical.com/rt/">http://www.bestpractical.com/rt/</a>.</p>
 
+<p align="center">
 RT and RTIR are commercially-supported software. To purchase support,
 training, custom development, or professional services, please get in
-touch with us at [[email protected]](mailto:[email protected]).
+touch with us at <a href="mailto:mailto:[email protected]">[email protected]</a>.
+</p>
 
 ## Required packages