dotnet: add page (#1581)

pages/common/dotnet.md

@@ -0,0 +1,19 @@
+# dotnet
+
+> Cross platform .NET command line tools for .NET Core.
+
+- Initialize a new .NET project:
+
+`dotnet new {{template_short_name}}`
+
+- Restore nuget packages:
+
+`dotnet restore`
+
+- Build and execute the .NET project in the current directory:
+
+`dotnet run`
+
+- Run a packaged dotnet application (only needs the runtime, the rest of the commands require the .NET Core SDK installed):
+
+`dotnet {{path/to/application.dll}}`