A.) System Requirements : - 

• Require node 4 or above
• Xcode 8 iOS 10

B.) Open terminal and type following command to install Appium 1.6.3 : -  npm install -g appium  

C.) External Dependencies : - 

• Install "Homebrew" by following command : - ruby -e “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• After instaling Home brew run following commands : - 
• brew install ideviceinstaller
• brew install carthage 
• npm install -g ios-deploy
• npm install -g deviceconsole
• gem install xcpretty
• brew install libimobiledevice --HEAD (for iOS10)
• brew install libimobiledevice (for iOS 9)

3.) WebDriverAgent Configuration : - 

• Go to newly installed Appium directory and navigate to “node_modules/appium-xcuitest-driver/WebDriverAgent”
• Run following command : - mkdir -p Resources/WebDriverAgent.bundle
• Run following command : - sh ./Scripts/bootstrap.sh -d
• Open Xcode with WebDriverAgent.xcodeproj
• Build WebDriverAgent project with provisioning profile.
• Now run following command : - 

  xcodebuild -project WebDriverAgent.xcodeproj -scheme WebDriverAgentRunner -destination ‘id=UDID of device‘ test

Details about commands

1.)Homebrew : - Package manager for macOS.

2.)ideviceinstaller  : - Cross-platform library and tools for communicating with iOS devices

3.) carthage  : - A dependency manager that gets the job done without taking over the responsibility of Xcode.

4.)ios-deploy  :- debug iOS apps without using Xcode

5.) deviceconsole : - iOS system log tailer.

6.) xcpretty : - flexible and fast xcodebuild formatter.

7.) libimobiledevice : - A cross-platform software protocol library and tools to communicate with iOS

Installation Guide for Appium 1.6.3