Update README.md

Clipy/Managers/HotKeyManager.swift

@@ -9,7 +9,6 @@
 import Foundation
 import RxSwift
 import Magnet
-import RxOptional
 
 final class HotKeyManager: NSObject {
     // MARK: - Properties

README.md

@@ -1,11 +1,11 @@
 Clipy
 =============================
 [![Build Status](https://travis-ci.org/Clipy/Clipy.svg?branch=master)](https://travis-ci.org/Clipy/Clipy)
-[![Release version](https://img.shields.io/github/release/Clipy/Clipy.svg)](https://github.com/Clipy/Clipy/releases)
+[![Release version](https://img.shields.io/github/release/Clipy/Clipy.svg)](https://github.com/Clipy/Clipy/releases/latest)
 [![License: MIT](https://img.shields.io/github/license/Clipy/Clipy.svg)](https://github.com/Clipy/Clipy/blob/master/LICENSE)
 
 
-Clipy is a Clipboard extension app for Mac OSX.
+Clipy is a Clipboard extension app for macOS.
 
 __Requirement__: OS X Mavericks or higher
 
@@ -23,13 +23,11 @@ __Distribution Site__ : <https://clipy-app.com>
 0. Move to the project root directory
 1. Install [CocoaPods](http://cocoapods.org) and [fastlane](https://github.com/fastlane/fastlane) using Bundler. Run `bundle install`
 2. Run `bundle exec pod install` on your terminal.
-2. Open Clipy.xcworkspace on Xcode.
+2. Open `Clipy.xcworkspace` on Xcode.
 3. build.
 
 ### Dependencies
 The source code is dependent on some libraries.
-* [PTHotKey](https://github.com/keith/PTHotKeyTest)
-* [Shortcut Recorder](https://github.com/iKorich/shortcutrecorder)
 * [Sparkle](https://github.com/sparkle-project/Sparkle)
 * [Realm](https://realm.io/)
 * [PINCache](https://github.com/pinterest/PINCache)
@@ -49,7 +47,7 @@ The source code is dependent on some libraries.
 ### Distribution
 If you distribute derived work, especially in the Mac App Store, I ask you to follow two rules:
 
-1. Don't use "Clipy" and "ClipMenu" as your product name.
+1. Don't use `Clipy` and `ClipMenu` as your product name.
 2. Follow the MIT license terms.
 
 Thank you for your cooperation.
@@ -60,4 +58,4 @@ Clipy is available under the MIT license. See the LICENSE file for more info.
 Icons are copyrighted by their respective authors.
 
 ### Special Thanks
-__Thank you for [@naotaka](https://github.com/naotaka) who have published [Clipmenu](https://github.com/naotaka/ClipMenu) as OSS.__
+__Thank you for [@naotaka](https://github.com/naotaka) who have published [ClipMenu](https://github.com/naotaka/ClipMenu) as OSS.__