Update Readme

- Installation instructions
- Badges

Author: mac-cain13

Readme.md

@@ -1,7 +1,25 @@
-# R.swift.Library ![Version](https://img.shields.io/cocoapods/v/R.swift.Library.svg?style=flat) ![License](https://img.shields.io/cocoapods/l/R.swift.Library.svg?style=flat) ![Platform](https://img.shields.io/cocoapods/p/R.swift.Library.svg?style=flat)
+# R.swift.Library [![Version](https://img.shields.io/cocoapods/v/R.swift.Library.svg?style=flat)](http://cocoapods.org/?q=R.swift.Library) [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) [![License](https://img.shields.io/cocoapods/l/R.swift.Library.svg?style=flat)](blob/master/License) ![Platform](https://img.shields.io/cocoapods/p/R.swift.Library.svg?style=flat)
 
 _Library containing types supporting code generated by [R.swift](https://github.com/mac-cain13/R.swift)_
 
+## Why use this?
+
+Regular users probably want to include this library to use [R.swift](https://github.com/mac-cain13/R.swift). Developers of other libraries can use this library to extend upon the types and code R.swift generates and uses.
+
+## Installation
+
+### CocoaPods (recommended)
+
+_**Be aware:** If you just want to use R.swift follow the install instructions for R.swift._
+
+1. Add `pod 'R.swift.Library'` to your [Podfile](http://cocoapods.org/#get_started)
+2. Run `pod install`
+
+### Carthage
+
+1. Add `github "mac-cain13/R.swift.Library"` to your [Cartfile](https://github.com/Carthage/Carthage/blob/master/Documentation/Artifacts.md#cartfile)
+2. Run `carthage`
+
 ## License
 
-R.swift and R.swift.Library are created by [Mathijs Kadijk](https://github.com/mac-cain13) and released under a [MIT License](License).
+[R.swift](https://github.com/mac-cain13/R.swift) and [R.swift.Library](https://github.com/mac-cain13/R.swift.Library) are created by [Mathijs Kadijk](https://github.com/mac-cain13) and released under a [MIT License](License).