Added instructions to README

README.md

@@ -7,7 +7,7 @@
 [![License](https://img.shields.io/cocoapods/l/TOCropViewController.svg?style=flat)](http://cocoadocs.org/docsets/TOCropViewController)
 [![Platform](https://img.shields.io/cocoapods/p/TOCropViewController.svg?style=flat)](http://cocoadocs.org/docsets/TOCropViewController)
 
-TOCropViewController is an open-source `UIViewController` subclass built to allow users to perform basic manipulation on UIImage objects; specifically cropping and some basic rotations. It has been designed with the iOS 8 Photos app in mind, and as such, behaves in an already familiar way.
+TOCropViewController is an open-source `UIViewController` subclass built to allow users to perform basic manipulation on `UIImage` objects; specifically cropping and some basic rotations. It has been designed with the iOS 8 Photos app in mind, and as such, behaves in an already familiar way.
 
 ## Features
 * Crop images by dragging the edges of a grid overlay.
@@ -33,6 +33,21 @@ pod 'TOCropViewController'
 #### Manual
 Add the files in the TOCropViewController subfolder to your Xcode project.
 
+## How do I use it?
+`TOCropViewController` operates around a very textbook modal setup. As such, it cannot be pushed to a `UINavigationController` stack, and instead must be presented as a modal dialog on an existing view controller.
+
+```
+UIImage *image = ...; //Load an image
+
+TOCropViewController *cropViewController = [[TOCropViewController alloc] initWithImage:image];
+cropViewController.delegate = self;
+[self presentViewController:cropViewController animated:YES completion:nil];
+
+```
+
+Optionally, `TOCropViewController` also supports a custom presentation animation, providing more visual context to the user. Please see the sample app for a demonstration on how to implement this.
+
+
 ## How does it work?
 While traditional cropping UI implementations will usually just have a dimming view with a square hole cut out of the middle, `TOCropViewController` goes about its implementation a little differently.
 
@@ -41,4 +56,4 @@ While traditional cropping UI implementations will usually just have a dimming v
 Since there are two views that are overlaid over the image (A dimming view and a translucency view), trying to cut a hole open in both of them would be rather complex. Instead, an image view is placed in a scroll view in the background, and a copy of the image view is placed on top, inside a container view that is clipped to the designated cropping size. The size and position of the foreground image is then made to match the background view, creating the illusion that there is a hole in the dimming views, and minimising the number of views onscreen.
 
 ## License
-TOCropViewController is licensed under the MIT License, please see the LICENSE file.
+TOCropViewController is licensed under the MIT License, please see the LICENSE file.