Updated README

Author: tobihagemann

README.md

@@ -27,7 +27,7 @@ Continuous integration hosting is provided by [MacStadium](https://www.macstadiu
 You can use [Swift Package Manager](https://swift.org/package-manager/ "Swift Package Manager").
 
 ```swift
-.package(url: "https://github.com/cryptomator/cloud-access-swift.git", .upToNextMinor(from: "2.0.0"))
+.package(url: "https://github.com/cryptomator/cloud-access-swift.git", .upToNextMinor(from: "3.0.0"))
 ```
 
 ## Usage