Update README

Author: quangctkm9207

README.md

@@ -32,7 +32,7 @@ $ brew install carthage
 
 To integrate MaterialShowcase into your Xcode project using Carthage, specify it in your `Cartfile`:
 ```ogdl
-github "aromajoin/material-showcase-ios" ~> 0.7.3
+github "aromajoin/material-showcase-ios" ~> 0.8.0
 ```
 
 Run `carthage update` to build the framework and drag the built `MaterialShowcase.framework` into your Xcode project.