Update README.md

Author: lxian

README.md

@@ -1,4 +1,35 @@
 # Fuzzywuzzy_swift (WIP)
 Fuzzy String Matching in Swift using Levenshtein Distance. Inspired by the python fuzzywuzzy library https://github.com/seatgeek/fuzzywuzzy
 
+It has no external dependancies. And thanks to Swift String, it can support multi-lingual.
+
 **WARNING: This library is still WORKING IN PROGRESS.**
+
+# Installation
+### Carthage
+Add the following line to your Cartfile. And run `carthage update`
+```
+github "lxian/Fuzzywuzzy_swift"
+```
+### Cocoapod
+Add the following line to your Podfile. And run `pod install`
+```
+pod 'Fuzzywuzzy_swift', :git=> 'https://github.com/lxian/Fuzzywuzzy_swift.git'
+```
+### Manually
+drag the `Fuzzywuzzy_swift` folder into your project
+
+# Usage
+```swift
+import Fuzzywuzzy_swift
+```
+### Simple Ratio
+```swift
+String.fuzzRatio(str1: "some text here", str2: "same text here!") // => 93
+```
+
+### Partial Ratio
+Partial Ratio tries to match the shoter string to a substring of the longer one
+```swift
+String.fuzzPartialRatio(str1: "some text here", str2: "I found some text here!") // => 100
+```