Added Controller setup instructions

Author: ivaylokenov

README.md

@@ -1,5 +1,26 @@
 # MyWebApi - ASP.NET Web API Fluent Testing Framework
+====================================
+
 MyWebApi is unit testing framework providing easy fluent interface to test the ASP.NET Web API framework. Inspired by [TestStack.FluentMVCTesting](https://github.com/TestStack/TestStack.FluentMVCTesting) and [ChaiJS](https://github.com/chaijs/chai)
 
 [![Build status](https://ci.appveyor.com/api/projects/status/738pm1kuuv7yw1t5?svg=true)](https://ci.appveyor.com/project/ivaylokenov/mywebapi)
 
+## How to use
+
+### Controllers
+
+You have a couple of options from which you can setup the controller you want to test. The framework gives you static `MyWebApi` class from which the test builder starts.
+
+```c#
+// instantiates controller with parameterless constructor
+MyWebApi
+	.Controller<WebApiController>();
+	
+// instantiates controller with constructor function to resolve dependencies
+MyWebApi
+	.Controller(() => new WebApiController(mockedInjectedService));
+```
+
+## Any questions, comments or additions?
+
+Leave an issue on the [issues page](https://github.com/ivaylokenov/MyWebApi/issues) or send a [pull request](https://github.com/ivaylokenov/MyWebApi/pulls).