chore(workflow): add project origin

Author: duanhongyi

README.md

@@ -1,6 +1,6 @@
 # Drycc workflow
 
-**Drycc Workflow** is an open source Platform as a Service (PaaS) that adds a developer-friendly layer to any [Kubernetes][k8s-home] cluster, making it easy to deploy and manage applications.
+**Drycc Workflow** is an open source Container as a Service (CaaS) that adds a developer-friendly layer to any [Kubernetes][k8s-home] cluster, making it easy to deploy and manage applications.
 
 To **get started** with **Drycc Workflow** please read the [Quick Start Guide](https://drycc.cc/quickstart/).
 
@@ -26,6 +26,9 @@ Please see below for links and descriptions of each component:
 
 We welcome your input! If you have feedback, please [submit an issue][issues]. If you'd like to participate in development, please read the "Working on Documentation" section below and [submit a pull request][prs].
 
+This project has been forked from [Deis](https://github.com/deis/deis) since 2018.08 but changed a lot,
+not compatible with each other.
+
 # Working on Documentation
 [![Build Status](https://drone.drycc.cc/api/badges/drycc/workflow/status.svg)](https://drone.drycc.cc/drycc/workflow)
 

src/index.md

@@ -1,12 +1,8 @@
 # Welcome to Drycc
 
-Drycc is a community branch of the popular PaaS service deis. 
+Drycc Workflow is an open source container cloud platform.
 
-Since Microsoft acquired the Deis team, it has stopped updating, so it decided to work hard to
-build a completely new and open developer community, we invite everyone to join us and help build
-the next generation of PaaS cloud services.
-
-Drycc Workflow is an open source Platform as a Service (PaaS) that adds a developer-friendly layer
+Usually we also call it Container as a Service(CaaS) that adds a developer-friendly layer
 to any Kubernetes cluster, making it easy to deploy and manage applications.
 
 Drycc Workflow includes capabilities for building and deploying from source via `git push`, simple