Merge pull request #459 from NextTurn/contrib

Initialize contributing guidelines

CONTRIBUTING.md

@@ -0,0 +1,28 @@
+# Contributing
+
+## Prerequisites
+
+You need to install either of the followings to develop .NET.
+
+- [Visual Studio 2019](https://visualstudio.microsoft.com/downloads/) with *.NET desktop development* workload, which includes .NET SDK.
+- .NET SDK and your favorite code editor.
+  - You can find .NET SDK installation instructions on the [Download .NET](https://dotnet.microsoft.com/download) page.
+  - You can try [Visual Studio Code](https://code.visualstudio.com/Download), which is an open source and cross-platform editor.
+
+## Developing in Visual Studio
+
+You can open `src\winsw.sln` and then build and run tests from within Visual Studio.
+
+## Developing with .NET SDK
+
+### Building
+
+```
+dotnet build src\winsw.sln
+```
+
+### Testing
+
+```
+dotnet test src\Test\winswTests\winswTests.csproj
+```

DEVELOPER.md

@@ -3,19 +3,10 @@ WinSW Developer Information
 
 ### Build Environment
 
-* IDE: [Visual Studio Community 2019](https://visualstudio.microsoft.com/vs/) (free for open-source projects)
 * *winsw_key.snk* should be available in the project's root in order to build the executable
 * You can generate the certificate by running *generate-key.ps1*
 * The certificate is in *.gitignore* list. Please do not add it to the repository
  
-### Testing
-
-WinSW includes a set of tests powered by the [NUnit](https://www.nunit.org/) test framework.
-In order to run tests you can install [NUnit Console](https://github.com/nunit/nunit-console) on the build machine.
-
-Once you build the solution, you will be able to find the test DLL with dependencies in the `src/Test/winswTests/bin` directory.
-In NUnit Console you can just import projects from this directory and then run tests.
- 
 ### Continuous Integration
 
 Project has a continuous integration flow being hosted by AppVeyor ([project page](https://ci.appveyor.com/project/winsw/winsw)).