Update the readme about Mac Catalyst, HEIC coder and contribution guide

README.md

@@ -7,8 +7,9 @@
 [![Pod Version](http://img.shields.io/cocoapods/v/SDWebImage.svg?style=flat)](http://cocoadocs.org/docsets/SDWebImage/)
 [![Pod Platform](http://img.shields.io/cocoapods/p/SDWebImage.svg?style=flat)](http://cocoadocs.org/docsets/SDWebImage/)
 [![Pod License](http://img.shields.io/cocoapods/l/SDWebImage.svg?style=flat)](https://www.apache.org/licenses/LICENSE-2.0.html)
-[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/SDWebImage/SDWebImage)
-[![SwiftPM compatible](https://img.shields.io/badge/SwiftPM-Compatible-brightgreen.svg)](https://swift.org/package-manager/)
+[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-brightgreen.svg)](https://github.com/SDWebImage/SDWebImage)
+[![SwiftPM compatible](https://img.shields.io/badge/SwiftPM-compatible-brightgreen.svg)](https://swift.org/package-manager/)
+[![Mac Catalyst compatible](https://img.shields.io/badge/Catalyst-compatible-brightgreen.svg)](https://developer.apple.com/documentation/xcode/creating_a_mac_version_of_your_ipad_app/)
 [![codecov](https://codecov.io/gh/SDWebImage/SDWebImage/branch/master/graph/badge.svg)](https://codecov.io/gh/SDWebImage/SDWebImage)
 
 This library provides an async image downloader with cache support. For convenience, we added categories for UI elements like `UIImageView`, `UIButton`, `MKAnnotationView`.
@@ -32,9 +33,9 @@ This library provides an async image downloader with cache support. For convenie
 
 ## Supported Image Formats
 
-- Image formats supported by UIImage (JPEG, PNG, ...), including GIF
+- Image formats supported by UIImage (JPEG, PNG, HEIC, ...), including GIF/APNG/HEIC animation
 - WebP format, including animated WebP (use the [SDWebImageWebPCoder](https://github.com/SDWebImage/SDWebImageWebPCoder) project)
-- Support extendable coder plugins for new image formats. Like APNG, BPG, HFIF, SVG, etc. See all the list in [Image coder plugin List](https://github.com/SDWebImage/SDWebImage/wiki/Coder-Plugin-List)
+- Support extendable coder plugins for new image formats. Like BPG, HFIF, SVG, etc. See all the list in [Image coder plugin List](https://github.com/SDWebImage/SDWebImage/wiki/Coder-Plugin-List)
 
 ## Additional modules
 
@@ -54,7 +55,6 @@ As such, we have moved/built new modules to [SDWebImage org](https://github.com/
 #### Integration with 3rd party libraries
 - [SDWebImageFLPlugin](https://github.com/SDWebImage/SDWebImageFLPlugin) - plugin to support [FLAnimatedImage](https://github.com/Flipboard/FLAnimatedImage) as the engine for animated GIFs
 - [SDWebImageYYPlugin](https://github.com/SDWebImage/SDWebImageYYPlugin) - plugin to integrate [YYImage](https://github.com/ibireme/YYImage) & [YYCache](https://github.com/ibireme/YYCache) for image rendering & caching
-- [SDWebImageProgressiveJPEGDemo](https://github.com/SDWebImage/SDWebImageProgressiveJPEGDemo) - demo project for using `SDWebImage` + [Concorde library](https://github.com/contentful-labs/Concorde) for Progressive JPEG decoding
 
 #### Make our lives easier
 - [libwebp-Xcode](https://github.com/SDWebImage/libwebp-Xcode) - A wrapper for [libwebp](https://chromium.googlesource.com/webm/libwebp) + an Xcode project.
@@ -68,7 +68,7 @@ You can use those directly, or create similar components of your own.
 - iOS 8.0 or later
 - tvOS 9.0 or later
 - watchOS 2.0 or later
-- macOS 10.10 or later
+- macOS 10.10 or later (10.15 for Catalyst)
 - Xcode 10.0 or later
 
 #### Backwards compatibility
@@ -99,7 +99,11 @@ You can use those directly, or create similar components of your own.
 - If you'd like to **ask a general question**, use [Stack Overflow](http://stackoverflow.com/questions/tagged/sdwebimage).
 - If you **found a bug**, open an issue.
 - If you **have a feature request**, open an issue.
+
+## Contribution
+
 - If you **want to contribute**, read the [Contributing Guide](https://raw.githubusercontent.com/SDWebImage/SDWebImage/master/.github/CONTRIBUTING.md)
+- For **development contribution guide**, read the [How-To-Contribute](https://github.com/SDWebImage/SDWebImage/wiki/How-to-Contribute)
 
 ## How To Use
 
@@ -273,3 +277,4 @@ All source code is licensed under the [MIT License](https://raw.github.com/SDWeb
 - [Coders API Diagram](https://raw.githubusercontent.com/SDWebImage/SDWebImage/master/Docs/Diagrams/SDWebImageCodersClassDiagram.png)
 - [Loader API Diagram](https://raw.githubusercontent.com/SDWebImage/SDWebImage/master/Docs/Diagrams/SDWebImageLoaderClassDiagram.png)
 - [Cache API Diagram](https://raw.githubusercontent.com/SDWebImage/SDWebImage/master/Docs/Diagrams/SDWebImageCacheClassDiagram.png)
+