Update README.md

Author: mehmetozkaya

README.md

@@ -29,7 +29,7 @@ After Ocelot reroutes the request to the internal API, it will present the token
 
 Also over these picture, we have also apply the **claim based authentications**.
 
-### Installing
+## Installation
 Follow these steps to get your development environment set up:
 1. Check All projects run profiles. One by one Right Click the project file, open Properties window and check the debug section. Launh Profile should be the "Project" and App URLs should be the same as big picture.
 2. For all projects, one by one, Set a Startup project and see the Run profile on the Run button. Change the default running profile to IIS Express to Project name.