Added some "terms" pages to define basic Deis concepts.

docs/index.rst

@@ -5,6 +5,18 @@
 Welcome
 =======
 
-.. image:: _static/img/deis_builder.png
+.. image:: https://s3-us-west-2.amazonaws.com/deis-images/deis-graphic.png
 
-``deis`` is a PaaS.
+What is Deis?
+-------------
+
+``deis`` is an open source PaaS that makes it easy to deploy
+:ref:`container_def`\s and  :ref:`node_def`\s used to host applications,
+databases, middleware and other services. Deis leverages Chef, Docker and
+Heroku Buildpacks to provide a private PaaS that is lightweight and flexible.
+
+Deis comes with out-of-the-box support for Ruby, Python, Node.js, Java,
+Clojure, Scala, Play, PHP, Perl, Dart and Go. However, Deis can deploy
+*anything* using Heroku Buildpacks, Docker images, or Chef recipes. Deis is
+designed to work with any cloud provider, although only EC2 is currently
+supported.

docs/terms/container.rst

@@ -0,0 +1,23 @@
+:title: Container
+:description: What is a Deis Container?
+:keywords: deis, container
+
+.. _container_def:
+
+Container
+=========
+
+You think water moves fast? You should see ice. It moves like it has a mind.
+Like it knows it killed the world once and got a taste for murder. After the
+avalanche, it took us a week to climb out. Now, I don't know exactly when we
+turned on each other, but I know that seven of us survived the slide... and
+only five made it out. Now we took an oath, that I'm breaking now. We said
+we'd say it was the snow that killed the other two, but it wasn't. Nature is
+lethal but it doesn't hold a candle to man.
+
+Your bones don't break, mine do. That's clear. Your cells react to bacteria
+and viruses differently than mine. You don't get sick, I do. That's also
+clear. But for some reason, you and I react the exact same way to water. We
+swallow it too fast, we choke. We get some in our lungs, we drown. However
+unreal it may seem, we are connected, you and I. We're on the same curve, just
+on opposite ends.

docs/terms/node.rst

@@ -0,0 +1,21 @@
+:title: Chef Node
+:description: What is a Chef Node in Deis?
+:keywords: deis, chef, node
+
+.. _node_def:
+
+Chef Node
+=========
+
+Do you see any Teletubbies in here? Do you see a slender plastic tag clipped
+to my shirt with my name printed on it? Do you see a little Asian child with a
+blank expression on his face sitting outside on a mechanical helicopter that
+shakes when you put quarters in it? No? Well, that's what you see at a toy
+store. And you must think you're in a toy store, because you're here shopping
+for an infant named Jeb.
+
+Now that we know who you are, I know who I am. I'm not a mistake! It all makes
+sense! In a comic, you know how you can tell who the arch-villain's going to
+be? He's the exact opposite of the hero. And most times they're friends, like
+you and me! I should've known way back when... You know why, David? Because of
+the kids. They called me Mr Glass.