Update README.md (microsoft#8894)

README.md

@@ -5,6 +5,14 @@ Vcpkg helps you manage C and C++ libraries on Windows, Linux and MacOS. This too
 
 For short description of available commands, run `vcpkg help`.
 
+* Github: [https://github.com/microsoft/vcpkg](https://github.com/microsoft/vcpkg)
+* Slack: [https://cpplang.now.sh/](https://cpplang.now.sh/), the #vcpkg channel
+* Docs: [Documentation](docs/index.md)
+
+| Windows (x86, x64, arm, uwp)  | MacOS | Linux |
+| ------------- | ------------- | ------------- |
+| [![Build Status](https://dev.azure.com/vcpkg/public/_apis/build/status/vcpkg-Windows-master-CI?branchName=master)](https://dev.azure.com/vcpkg/public/_build/latest?definitionId=9&branchName=master)  | [![Build Status](https://dev.azure.com/vcpkg/public/_apis/build/status/vcpkg-osx-master-CI?branchName=master)](https://dev.azure.com/vcpkg/public/_build/latest?definitionId=11&branchName=master) | [![Build Status](https://dev.azure.com/vcpkg/public/_apis/build/status/vcpkg-Linux-master-CI?branchName=master)](https://dev.azure.com/vcpkg/public/_build/latest?definitionId=6&branchName=master) |
+
 ## Quick Start
 Prerequisites:
 - Windows 10, 8.1, 7, Linux, or MacOS