Add the docs/index.md

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Change-Id: I28bc0193977001b52e2961c5c7a8fb642cd894aa
Signed-off-by: Baohua Yang <yangbaohua@gmail.com>

docs/index.md

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+![Cello](docs/imgs/logo.png)
+
+**Note:** This is a **read-only mirror** of the formal [Gerrit](https://gerrit.hyperledger.org/r/#/admin/projects/cello) repository,
+where active development is ongoing. Issue tracking is handled in [Jira](https://jira.hyperledger.org/secure/RapidBoard.jspa?rapidView=111)
+
+## Incubation Notice
+
+This project is a Hyperledger project in _Incubation_. It was proposed to the community and documented [here](https://docs.google.com/document/d/1E2i5GRqWsIag7KTxjQ_jQdDiWcuikv3KqXeuw7NaceM/edit), and was approved by [Hyperledger TSC at 2017-01-07](https://lists.hyperledger.org/pipermail/hyperledger-tsc/2017-January/000535.html). Information on what _Incubation_ entails can be found in the [Hyperledger Project Lifecycle document](https://goo.gl/4edNRc).
+
+Platform to provide Blockchain as a Service!
+
+Using Cello, we can
+
+* Provision customizable Blockchains instantly, e.g., a 6-node chain using PBFT consensus.
+* Maintain a pool of running blockchains healthy with no manual operations.
+* Check the system status, scale the chain numbers, change resources... through a dashboard.
+
+![Typical Scenario](docs/imgs/scenario.png)
+
+You can also find more [scenarios](docs/scenario.md).
+
+## Features
+
+* Manage the lifecycle of blockchains, e.g., create/delete/keep health automatically.
+* Response nearly instantly, even with hundreds of chains, or nodes.
+* Support customized (e.g., size, consensus) blockchains request, currently we support [hyperledger fabric](https://github.com/hyperledger/fabric).
+* Support native Docker host or swarm host as the compute nodes, more supports on the way.
+* Support heterogeneous architecture, e.g., Z, Power and X86, from bare-metal servers to virtual machines.
+* Extend with monitor/log/health features by employing additional components.
+
+## Docs
+
+### User Docs
+* [Dashboard](docs/dashboard.md)
+
+### Operator Docs
+* [Installation & Deployment](docs/deployment.md)
+* [Scenarios](docs/scenario.md)
+* [Production Configuration](docs/production_config.md)
+
+### Development Docs
+* [How to contribute](docs/CONTRIBUTING.md)
+* We're following [pep8 style guide](https://www.python.org/dev/peps/pep-0008/), [Coding Style](docs/code_style.md)
+* [Architecture Design](docs/arch.md)
+* [Database Model](docs/db.md)
+* [API](api/restserver_v2.md)
+* [Develop react js](docs/reactjs.md)
+
+## Why named Cello?
+Can u find anyone better at playing chains? :)
+
+## License <a name="license"></a>
+The Hyperledger Project uses the [Apache License Version 2.0](LICENSE) software license.