Add DotNet style guide basic layout

CSharp/README.md

@@ -0,0 +1,30 @@
+# C# Style Guide
+
+This is a _work in progress_.
+
+## Table of Contents
+
+1. [General](#general)
+
+## General
+
+### Use var instead of explicit types
+
+Exceptions are allowed. For more information read [this fantastic post from Eric Lippert](https://blogs.msdn.microsoft.com/ericlippert/2011/04/20/uses-and-misuses-of-implicit-typing/).
+
+```csharp
+// Bad
+HttpClient httpClient = new HttpClient();
+
+// Good
+var httpClient = new HttpClient();
+
+// Allowed for using an interface instead of a class
+IUserService userService = new UserService();
+```
+
+## Resources
+
+- [CoreFX C# Coding Style](https://github.com/dotnet/corefx/blob/master/Documentation/coding-guidelines/coding-style.md)
+- [Framework Design Guidelines](https://msdn.microsoft.com/en-us/library/ms229042(v=vs.110).aspx)
+- [Microsoft C# Coding Conventions](https://msdn.microsoft.com/library/ff926074.aspx)

Readme.md

@@ -13,4 +13,5 @@ provide suggestions.
 - [NodeJs](NodeJs/Readme.md)
 - [Angular 1.x](Angular(1.x)/README.md)
 - [React](React/README.md)
-- [Swift](Swift/Readme.md)
+- [Swift](Swift/Readme.md)
+- [C#](CSharp/README.md)