message: [doc] a section for graph studio is added
diff: @@ -39,6 +39,10 @@ Compared with other graph database solutions, **Nebula Graph** has the following
  See our [Roadmap](https://github.com/vesoft-inc/nebula/wiki/Nebula-Graph-Roadmap-2019) for what's coming soon in **Nebula Graph**.
  +## Graph Visualization
  +
  +Visit [Graph Visualization](https://github.com/vesoft-inc/nebula-web-docker) for visual exploration of graph data on web UI.
  +
  ## Supported Clients
  * [Go](https://github.com/vesoft-inc/nebula-go)
  * [Python](https://github.com/vesoft-inc/nebula-python)
  