[release-notes] Added new entry for Apache Mesos

[Simon Clark]

commit 457ada201248e54e6e2427ee1d42acc328be50c3
Author: Simon Clark <simon.richard.clark at gmail.com>
Date:   Tue Oct 21 23:09:22 2014 +0100

    Added new entry for Apache Mesos

 en-US/Cluster.xml |   27 +++++++++++++++++++++------
 1 files changed, 21 insertions(+), 6 deletions(-)
---
diff --git a/en-US/Cluster.xml b/en-US/Cluster.xml
index 846f40a..72810b8 100644
--- a/en-US/Cluster.xml
+++ b/en-US/Cluster.xml
@@ -1,13 +1,28 @@
-<?xml version='1.0' encoding='utf-8' ?>
-<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+<?xml version='1.0' encoding='utf-8'?>
+<!DOCTYPE section PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+    "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"
+[
 <!ENTITY % BOOK_ENTITIES SYSTEM "Release_Notes.ent">
 %BOOK_ENTITIES;
 ]>
-
 <section>
   <title>Cluster</title>
   <para />
-      
+  <section id="apache-mesos">
+    <title>Apache Mesos</title>
+    <para>Apache Mesos is a cluster manager that provides efficient
+    resource isolation and sharing across distributed applications,
+    or frameworks. It abstracts CPU, memory, storage, and other
+    compute resources away from machines (physical or virtual),
+    enabling fault-tolerant and elastic distributed systems to
+    easily be built and run effectively. Apache Mesos is built
+    using the same principles as the Linux kernel, only at a
+    different level of abstraction. The Mesos kernel runs on every
+    machine and provides applications (e.g., Hadoop, Spark, Kafka,
+    Elastic Search) with API's for resource management and
+    scheduling across entire datacenter and cloud
+    environments.</para>
+    <para>For more information see 
+    <ulink url="http://mesos.apache.org/" />.</para>
+  </section>
 </section>
-  
-