Update readme.md

Author: Kyaa-dost

readme.md

@@ -1,5 +1,5 @@
 
-# Windows Community Toolkit :briefcase:
+# Windows Community Toolkit :toolbox:
 The Windows Community Toolkit is a collection of helper functions, custom controls, and app services. It simplifies and demonstrates common developer patterns when building experiences for Windows 10.
 
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@@ -16,23 +16,19 @@ All documentation for the toolkit is hosted on [Microsoft Docs](https://docs.mic
 ## Windows Community Toolkit Sample App :iphone:
 Want to see the toolkit in action before jumping into the code? Download and play with the [Windows Community Toolkit Sample App](https://www.microsoft.com/store/apps/9nblggh4tlcq) from the Store.
 
+## Contribution :rocket:
+Do you want to contribute? Check out our [Windows Community Toolkit Wiki](https://aka.ms/wct/wiki) page to learn more about contribution and guidelines.
+
 ## NuGet Packages :package:
 NuGet is a standard package manager for .NET applications which is built into Visual Studio. From your open solution, choose the *Tools* menu > *NuGet Package Manager* > *Manage NuGet packages for solution...* Enter one of the package names mentioned in [Windows Community Toolkit Nuget Packages](https://docs.microsoft.com/en-us/windows/communitytoolkit/nuget-packages) table to search for it online.
 
 ## <a name="supported"></a> Features :mailbox:
 The [Features list](https://github.com/MicrosoftDocs/WindowsCommunityToolkitDocs/blob/master/docs/toc.md#controls) refers to all the currently available features that can be found in the Windows Community Toolkit. Most features should work with the October 2018 Update (1809) SDK 17763 and above; however, refer to specific documentation on each feature for more information.
 
-## <a name="dependencies"></a> Required Dependencies :pushpin:
-The following dependencies are required for building the Windows Community Toolkit repo and sample app:
-
-* [Visual Studio 2019](https://visualstudio.microsoft.com/downloads/) with UWP and .NET workloads
-  * You'll also need to check the `C++ (v142) Universal Windows Platform tools` option under the UWP workload
-* [Windows SDK April 2020 Update 19041](https://developer.microsoft.com/en-us/windows/downloads/sdk-archive)
-* [.NET Core 3.1 SDK](https://dotnet.microsoft.com/download/visual-studio-sdks)
-* [.NET Framework 4.6.2 Developer Pack](https://dotnet.microsoft.com/download/visual-studio-sdks)
-
-## Contribution :rocket:
-Do you want to contribute? Check out our [Windows Community Toolkit Wiki](https://aka.ms/wct/wiki) page to learn more about contribution and guidelines.
+## Principles :ballot_box_with_check:
+* Principle **#1**: The toolkit will be kept simple.
+* Principle **#2**: As soon as a comparable feature is available in the Windows SDK for Windows 10, it will be marked as deprecated.
+* Principle **#3**: All features will be supported for two Windows SDK for Windows 10 release cycles or until another principle supersedes it.
 
 ## Roadmap :earth_americas:
 Read what we [plan for next iterations](https://github.com/windows-toolkit/WindowsCommunityToolkit/milestones), and feel free to ask questions.