CodeQL for VS Code: Initial commit.

README.md

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+# CodeQL for Visual Studio Code
+
+This project is an extension for Visual Studio Code that adds rich language support for CodeQL. It's used to find problems in code bases using CodeQL. It's written primarily in TypeScript.
+
+The extension is released. You can download it from the [Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=github.vscode-codeql).
+
+![CI status badge](https://github.com/github/vscode-codeql/workflows/Build%20Extension/badge.svg)
+
+## Features
+
+* Enables you to use CodeQL to query databases and discover problems in codebases.
+* Shows the flow of data through the results of path queries, which is essential for triaging security results.
+* Provides an easy way to run queries from the large, open source repository of [CodeQL security queries](https://github.com/Semmle/ql).
+* Adds IntelliSense to support you writing and editing your own CodeQL query and library files.
+
+
+## Project goals and scope
+
+This project will track new feature development in CodeQL and, whenever appropriate, bring that functionality to the Visual Studio Code experience.
+
+## Contributing
+
+This project welcomes contributions. See [CONTRIBUTING.md](CONTRIBUTING.md) for details on how to build, install, and contribute.
+
+## License
+
+The CodeQL extension for Visual Studio Code is [licensed](LICENSE.md) under the MIT License. The version of CodeQL used by the CodeQL extension is subject to the [CodeQL Research Terms & Conditions](https://securitylab.github.com/tools/codeql/license).
+
+When using the GitHub logos, be sure to follow the [GitHub logo guidelines](https://github.com/logos).