add 2.0 in README (#201)

* add 2.0 in README

* update doc links

* fix wum

README.md

@@ -1,41 +1,17 @@
-# Nebula Graph Documentation
+# Nebula Graph documentation
 
-This repository holds all the source files of **Nebula Graph** Documentations at [Official Documentation Site](https://docs.nebula-graph.io/).
+This repository holds all the source files of Nebula Graph Documentations at the [Documentation Site](https://docs.nebula-graph.io/).
 
-## Documentation Structure
+## Documentation index
 
-The general **Nebula Graph** documentation structure is as follows:
-
-```bash
-├── Language
-├── Overview
-    ├── Introduction
-    ├── Concepts
-    ├── Quick Start
-        ├── Get Started
-        ├── ...
-├── Query Language
-    ├── Data Types
-        ├── ...
-    ├── Functions and Operators
-        ├── ...
-    ├── Language Structure
-        ├── ...
-    ├── Statement Syntax
-        ├── ...
-├── Build Develop and Administration
-    ├── Build
-        ├── ...
-    ├── ...
-...
-```
-
-Detail TOC (table of content) please refer to the following links.
-
-- [Documentation Index](docs/manual-EN/README.md)
+- Documentation index for [Nebula Graph 1.0](docs/manual-EN/README.md)
+- Documentation index for Nebula Graph 2.0
 - [中文文档](https://docs.nebula-graph.com.cn/)
 - [Official Documentation Site](https://docs.nebula-graph.io/)
+- Clients (TODO)
+- [Nebula Graph Cloud](https://cloud-docs.nebula-cloud.io/en/posts/toc/dbaas-ug-toc/)
+- [Nebula Graph Studio](https://github.com/vesoft-inc/nebula-web-docker/tree/master/docs/en)
 
 ## Contributing
 
-If you find documentation issues, feel free to create an [Issue](https://github.com/vesoft-inc/nebula-docs/issues) to let us know or directly create a [Pull Request](https://github.com/vesoft-inc/nebula-docs/pulls) to help fix or update it. See **Nebula Graph** [CONTRIBUTING](CONTRIBUTING.md) guide to get started.
+If you have any questions on our documentation, feel free to raise an [Issue](https://github.com/vesoft-inc/nebula-docs/issues) or directly create a [Pull Request](https://github.com/vesoft-inc/nebula-docs/pulls) to help fix or update it. See Nebula Graph [CONTRIBUTING](CONTRIBUTING.md) guide to get started.

docs-2.0/CHANGELOG.md

@@ -0,0 +1,3 @@
+# Manual Changes
+
+* 0.1.1 - Initial release Nebula Graph alpha

docs-2.0/README.md

@@ -0,0 +1,70 @@
+# Welcome to Nebula Graph 2.0 Documentation
+
+Nebula Graph is a distributed, scalable, and lightning-fast graph database.
+
+It is the optimal solution in the world capable of hosting graphs with dozens of billions of vertices (nodes) and trillions of edges with millisecond latency.
+
+## Tutorial Video
+
+* [YouTube](https://www.youtube.com/channel/UC73V8q795eSEMxDX4Pvdwmw/)
+* [bilibili](https://space.bilibili.com/472621355)
+
+## Preface
+
+* [Manual Change Log](CHANGELOG.md)
+
+## Introduction
+
+* [What is Nebula Graph](1.introduction/1.what-is-nebula-graph.md)
+
+## Quick start (for beginners)
+
+* [Quick start workflow](2.quick-start/1.quick-start-workflow.md)
+* [Deploy Nebula Graph with Docker Compose](docs-2.0/2.quick-start/2.deploy-nebula-graph-with-docker-compose.md)
+* [Connect to Nebula Graph](docs-2.0/2.quick-start/3.connect-to-nebula-graph.md)
+* [Nebula Graph CRUD](docs-2.0/2.quick-start/4.nebula-graph-crud.md)
+
+## nGQL guide (for all users)
+
+* Operators
+  * [Comparison](docs-2.0/3.ngql-guide/5.operators/1.comparison.md)
+  * [Pipe](docs-2.0/3.ngql-guide/5.operators/4.pipe.md)
+  * [Property reference](docs-2.0/3.ngql-guide/5.operators/5.property-reference.md)
+  * [Set](docs-2.0/3.ngql-guide/5.operators/6.set.md)
+  * [String](docs-2.0/3.ngql-guide/5.operators/7.string.md)
+  * [Precedence](docs-2.0/3.ngql-guide/5.operators/9.precedence.md)
+
+* Functions and expressions
+  * [Math](docs-2.0/3.ngql-guide/6.funtions-and-expressions/1.math.md)
+  * [String](docs-2.0/3.ngql-guide/6.funtions-and-expressions/2.string.md)
+  * [Date and time](docs-2.0/3.ngql-guide/6.funtions-and-expressions/3.date-and-time.md)
+  * [Schema](docs-2.0/3.ngql-guide/6.funtions-and-expressions/4.schema.md)
+  * [Case expressions](docs-2.0/3.ngql-guide/6.funtions-and-expressions/5.case-expressions.md)
+
+* General query statements
+  * [Match](docs-2.0/3.ngql-guide/7.general-query-statements/2.match.md)
+
+* Space statements
+  * [Create space](docs-2.0/3.ngql-guide/9.space-statements.md/1.create-space.md)
+  * [Use space](docs-2.0/3.ngql-guide/9.space-statements.md/2.use-space.md)
+  * [Show spaces](docs-2.0/3.ngql-guide/9.space-statements.md/3.show-spaces.md)
+  * [Describe space](2.query-language/4.statement-syntax/1.data-definition-statements/create-edge-syntax.md)
+  * [Drop space](docs-2.0/3.ngql-guide/9.space-statements.md/5.drop-space.md)
+
+* Vertex statements
+  * [Insert vertex](docs-2.0/3.ngql-guide/12.vertex-statements/1.insert-vertex.md)
+  * [Update vertex](docs-2.0/3.ngql-guide/12.vertex-statements/2.update-vertex.md)
+  * [Upsert vertex](docs-2.0/3.ngql-guide/12.vertex-statements/3.upsert-vertex.md)
+  * [Delete vertex](docs-2.0/3.ngql-guide/12.vertex-statements/4.delete-vertex.md)
+
+* Subgraph and path
+  * [Get subgraph](docs-2.0/3.ngql-guide/15.subgraph-and-path/1.get-subgraph.md)
+
+* Query tuning statements
+  * [Explain and profile](docs-2.0/3.ngql-guide/16.query-tuning-statements/1.explain-and-profile.md)
+
+## Deployment and installation (for Developers and DBA)
+
+* [Resource preparations](docs-2.0/4.deployment-and-installation/1.resource-preparations.md)
+* Compile and install Nebula Graph
+  * [Install Nebula Graph by compiling the source code](docs-2.0/4.deployment-and-installation/2.compile-and-install-nebula-graph/1.install-nebula-graph-by-compiling-the-source-code.md)

docs/manual-EN/README.md

@@ -1,4 +1,4 @@
-# Welcome to the Official Nebula Graph Documentation
+# Welcome to Nebula Graph 1.0 Documentation
 
 **Nebula Graph** is a distributed, scalable, and lightning-fast graph database.
 
@@ -128,7 +128,7 @@ It is the optimal solution in the world capable of hosting graphs with dozens of
   * [Storaged Configuration](3.build-develop-and-administration/3.configurations/5.storage-config.md)
   * [Console Configuration](3.build-develop-and-administration/3.configurations/6.console-config.md)
   * [Kernel Configuration](3.build-develop-and-administration/3.configurations/7.kernel-config.md)
-  * [Single Node Log](3.build-develop-and-administration/3.configurations/8.single-node-log.md)
+  * [Change Log Severity on a Host](3.build-develop-and-administration/3.configurations/8.single-node-log.md)
 * Account Management Statement
   * [Alter User Syntax](3.build-develop-and-administration/4.account-management-statements/alter-user-syntax.md)
   * [Authentication](3.build-develop-and-administration/4.account-management-statements/authentication.md)

mkdocs.yml

@@ -165,7 +165,7 @@ nav:
           - Storaged Configuration: manual-EN/3.build-develop-and-administration/3.configurations/5.storage-config.md
           - Console Configuration: manual-EN/3.build-develop-and-administration/3.configurations/6.console-config.md
           - Kernel Configuration: manual-EN/3.build-develop-and-administration/3.configurations/7.kernel-config.md
-          - Single Node Log: manual-EN/3.build-develop-and-administration/3.configurations/8.single-node-log.md
+          - Change Log Severity on a Host: manual-EN/3.build-develop-and-administration/3.configurations/8.single-node-log.md
       - Account Management Statement:
           - Alter User Syntax: manual-EN/3.build-develop-and-administration/4.account-management-statements/alter-user-syntax.md
           - Authentication: manual-EN/3.build-develop-and-administration/4.account-management-statements/authentication.md