Added PhotoEditorSDK to the list of Image Editing

Hi there,

my name is Daniel, CTO of imgly, the creators of the PhotoEditorSDK.
I came across your awesome-ios list and wondered if you would be so kind to enlist PhotoEditorSDK in your list. Check out the product/sdk yourself to see if it is a fit for list.

We would appreciate if it would be possible to get enlisted.

Regards,
Daniel

README.md

@@ -821,6 +821,7 @@ Awesome-iOS is an amazing list for people who need a certain feature on their ap
 * [FlexibleImage](https://github.com/kawoou/FlexibleImage) - A simple way to play with image! :large_orange_diamond:
 * [TLPhotoPicker](https://github.com/tilltue/TLPhotoPicker) - Multiple phassets picker for iOS lib. like a facebook. :large_orange_diamond:
 * [YapImageManager](https://github.com/yapstudios/YapImageManager) - A high-performance image downloader written in Swift, powered by YapDatabase. :large_orange_diamond:
+* [PhotoEditorSDK](https://www.photoeditorsdk.com) - A fully customizable photo editor for your app.
 
 #### Media Processing
 * [SwiftOCR](https://github.com/garnele007/SwiftOCR) - Fast and simple OCR library written in Swift :large_orange_diamond: