Improve README.md (#13)

Author: lausek

README.md

@@ -35,8 +35,7 @@ Ninja JWT can be installed with pip:
 
     pip install django-ninja-jwt
 
-Also, you need to register `NinjaJWTDefaultController` controller to you Django-Ninja api.
-The `NinjaJWTDefaultController` comes with three routes `obtain_token`, `refresh_token` and `verify_token`
+Also, you need to register `NinjaJWTDefaultController` controller to your Django-Ninja api.
 
 ```python
 from ninja_jwt.controller import NinjaJWTDefaultController
@@ -48,7 +47,7 @@ api.register_controllers(NinjaJWTDefaultController)
 ```
 
 The `NinjaJWTDefaultController` comes with three routes `obtain_token`, `refresh_token` and `verify_token`. 
-It is a combination of two subclass `TokenVerificationController` and `TokenObtainPairController`.
+It is a combination of two subclasses `TokenVerificationController` and `TokenObtainPairController`.
 If you wish to customize these routes, you can inherit from these controllers and change its implementation
 
 ```python