Consolidate readme/wiki docs into organized docs folder

docs/index.md

@@ -1,3 +1,22 @@
 # Dokku Documentation
 
-Docs go here.
+Docker powered mini-Heroku. The smallest PaaS implementation you've ever seen.
+
+## Table Of Contents
+
+- [Installation](http://progrium.viewdocs.io/dokku/installation)
+- [Upgrading](http://progrium.viewdocs.io/dokku/upgrading)
+- [Troubleshooting](http://progrium.viewdocs.io/dokku/troubleshooting)
+- [Components](http://progrium.viewdocs.io/dokku/components)
+- [Application Deployment](http://progrium.viewdocs.io/dokku/application-deployment)
+- [Remote commands](http://progrium.viewdocs.io/dokku/remote-commands)
+- [Plugins](http://progrium.viewdocs.io/dokku/plugins)
+- [Configuration management](http://progrium.viewdocs.io/dokku/configuration-management)
+- [TLS/SPDY support](http://progrium.viewdocs.io/dokku/tls-spdy-support)
+- [DNS](http://progrium.viewdocs.io/dokku/dns)
+
+## Things this project won't do
+
+ * **Multi-host.** Not a huge leap, but this isn't the project for it. Have a look at [Flynn](https://flynn.io/).
+ * **Multitenancy.** It's ready for it, but again, have a look at [Flynn](https://flynn.io/).
+ * **Client app.** Given the constraints, running commands remotely via SSH is fine.