Easy custom placeholder and growing textView

pod 'TextViewMaster'

import TextViewMaster

    isAnimate: Bool = true                                          //에니메이션 사용여부
    maxLength: Int = 0                                              //최대 글자수
    minHeight: CGFloat = 0                                          //최소 높이 제한
    maxHeight: CGFloat = 0                                          //최대 높이 제한

    placeHolder: String = ""                                        //플레이스홀더
    placeHolderFont: UIFont = UIFont.systemFont(ofSize: 17)         //플레이스홀더 폰트
    placeHolderColor: UIColor = UIColor(white: 0.8, alpha: 1.0)     //플레이스홀더 컬러
    placeHolderTopPadding: CGFloat = 0                              //플레이스홀더 위 여백
    placeHolderBottomPadding: CGFloat = 0                           //플레이스홀더 아래 여백
    placeHolderRightPadding: CGFloat = 5                            //플레이스홀더 오른쪽 여백
    placeHolderLeftPadding: CGFloat = 5                             //플레이스홀더 왼쪽 여백

let textViewMaster = TextViewMaster()
textViewMaster.delegate = self       
inputView.addSubview(textViewMaster)

func growingTextView(growingTextView: TextViewMaster, shouldChangeTextInRange range:NSRange, replacementText text:String) -> Bool
func growingTextViewShouldReturn(growingTextView: TextViewMaster) 
func growingTextView(growingTextView: TextViewMaster, willChangeHeight height:CGFloat)
func growingTextView(growingTextView: TextViewMaster, didChangeHeight height:CGFloat)