To install using CocoaPods 

1- open terminal 
2- go to your project directory using cd [Path]
3- use this command to create pods repo "pod init"
4- using this command to install pod "pod install"
5- close your peoject and open it using xcworkspace file
6- type    pod 'IAFBLiveAnimation'    in your pod file and save it.
7- got to terminal and use 'pod install' to install this pod.
8- import IAFBLiveAnimation in your ViewController.swift
9- put this line of code in an action which supposed to show animation
"CurvedAnimation.init(mainView: self.view, presentedImage: #imageLiteral(resourceName: UIImage(named: "love"))"
10- Enjoy using it ^_^.