Add a README

README.md

@@ -1 +1,33 @@
-# Needs
+# Needs
+
+[![Version](https://img.shields.io/cocoapods/v/Needs.svg?style=flat)](https://cocoapods.org/pods/Needs)
+[![License](https://img.shields.io/cocoapods/l/Needs.svg?style=flat)](https://cocoapods.org/pods/Needs)
+[![Platform](https://img.shields.io/cocoapods/p/Needs.svg?style=flat)](https://cocoapods.org/pods/Needs)
+
+*Needs* is a small library that let you use a property wrapper to automatically call `setNeeds-` methods.
+It works out-of-the-box for all `setNeeds-` methods available on `UIView`, `UIViewController` and `NSView`. 
+If you _need to_ you can also [extend it](https://en.wikipedia.org/wiki/Open–closed_principle) with your own _Need_.
+
+## Requirements
+
+- iOS 9.0+ / macOS 10.10+
+- Swift 5.2
+
+## Installation
+*Needs* is available through CocoaPods and SwiftPM
+
+## Example
+
+Add a `Needs` property wrapper to one of your properties to call automatically the desired `setNeeds-` method 
+```swift
+@Needs(.layout, .display)
+var progress: CGFloat = 0
+```
+
+## Author
+
+[Jérôme Alves](https://twitter.com/jegnux)
+
+## License
+
+**Needs** is available under the MIT license. See the [LICENSE](LICENSE) file for more info.