chore: update README (#697)

* chore: update README

* update per comment

CONTRIBUTING.md

@@ -45,7 +45,7 @@ Checkout a feature branch
 $ git checkout -b my_feature
 ```
 
-Add your commits, 
+Add your commits,
 ```
 $ git commit -a -s -m "Implement an awesome feature"
 ```
@@ -67,4 +67,4 @@ Cyclone is written with Golang, before you commit your code, please check [Golan
 
 ### Javascript
 
-Cyclone's web UI is developed with React, Ant Design, please read [Airbnb Javascript Style Guide](https://github.com/airbnb/javascript) if you want to contribute to frontend. Cyclone also makes use of linter tools like Prettier, ESLint, Lint-staged to enforce its code quality.
+Cyclone's web UI is developed with React, Ant Design, please read [Airbnb Javascript Style Guide](https://github.com/airbnb/javascript) if you want to contribute to frontend. Cyclone also makes use of linter tools like Prettier, ESLint, Lint-staged to enforce its code quality.

README.md

@@ -1,48 +1,57 @@
 # Cyclone
 
-<h1 align="center">
-	<br>
-	<img width="400" src="docs/images/logo.jpeg" alt="cyclone">
-	<br>
-	<br>
-</h1>
+<p align="center"><img src="docs/images/logo.jpeg" width="200"></p>
 
-Cyclone is a cloud native workflow engine not only for CI/CD pipelines, but also for general workflows. It defines workflow by assembling workflow stages as DAG. As Cyclone totally bases on Kubernetes, it can be easily deployed and used.
+Cyclone is a powerful workflow engine and end-to-end pipeline solution implemented with native Kubernetes resources,
+with no extra dependencies. It can run anywhere Kubernetes is deployed: public cloud, on-prem or hybrid cloud.
 
-Cyclone defines each workflow stage as a pod, and assemble them to workflow by capturing dependencies between stages as DAG. 
+Cyclone is architectured with a low-level workflow engine that is application agnostic, offering capabilities like
+workflow DAG scheduling, resource lifecycle management and most importantly, a pluggable and extensible framework for
+extending the core APIs. Above which, Cyclone provides built-in support for high-level functionalities, with CI/CD
+pipelines and AI DevOps being two notable examples, and it's possible expand to more use cases as well.
+
+With Cyclone, users end up with the flexibility of workflow orchestration and the usability of complete solutions.
 
 ## Features
-- **Kubernetes Native**: Totally based on Kubernetes without any other dependencies..
-- **Workflow Engine**: Supports CI/CD pipelines, AI pipelines and any other general workflows.
-- **DAG**: Cyclone supports any DAG workflow.
-- **Pluggability**: Cyclone can easily integrate with external systems, such as SCM, Docker Registry, S3, etc.
-- **Triggers**: Workflow can be triggered by time schedule, webhooks.
-- **Controllable**: Execution of workflow can be paused, resumed or cancelled.
-- **Multi-Tenant**: Cyclone supports multi-tenant.
-- **Garbadge Collection**: Cleanup after workflow finished and results collected.
+
+- DAG graph scheduling: Cyclone supports DAG workflow execution
+- Parameterization: stage (unit of execution) can be parameterized to maximize configuration reuse
+- External dependencies: external systems like SCM, docker registry, S3 can be easily integrated with Cyclone
+- Triggers: Cyclone supports cron and webhook trigger today, with upcoming support for other types of triggers
+- Controllability: workflow execution can be paused, resumed, retried or cancelled
+- Multi-cluster: workflow can be executed in different clusters from where Cyclone is running
+- Multi-tenant: resources manifests and workflow executions are grouped and isolated per tenant
+- Garbadge Collection: automatic resource cleanup after workflow execution
+- Logging: logs are persisted and indpendent from workflow lifecycle, enabling offline inspection
+- Built-in Pipeline: curated DAG templates and stage runtimes for running DevOps pipelines
 
 ## Quick Start
 
 Build images
+
 ```bash
 $ make container
 ```
 
 Deploy to Kubernetes cluster
+
 ```bash
 $ kubectl create -f manifests/cyclone.yaml
 ```
 
 ## Community
 
-- **Slack**: Join [Cyclone Community](https://caicloud-cyclone.slack.com/join/signup) for disscussions and ask questions.
+- **Slack**: Join [Cyclone Community](https://caicloud-cyclone.slack.com/join/signup) for disscussions and posting questions.
 
 ## Roadmap
 
 [Cyclone Roadmap](./docs/ROADMAP.md)
 
-## History
+## Contributing
+
+If you are interested in contributing to Cyclone, please checkout [CONTRIBUTING.md](./CONTRIBUTING.md).
+We welcome any code or non-code contribution!
 
-Before v0.9.0, Cyclone focuses on CI/CD pipelines and run pipelines in both Docker and Kubernetes.
+## Licensing
 
-From v0.9.0, Cyclone has been totally refactored, new Cyclone not only aims at CI/CD pipeline, but also provides a general workflow engine. Compared with previous one, it's more flexible and powerful.
+Cyclone is licensed under the Apache License, Version 2.0. See [LICENSE](./LICENSE) for the full license text.