Added secure text field support, delegate support, updated doco

DSFFloatLabelledTextControl.podspec

@@ -1,9 +1,9 @@
 Pod::Spec.new do |s|
   s.name         = "DSFFloatLabelledTextControl"
-  s.version      = "1.7.0"
+  s.version      = "1.8.0"
   s.summary      = "A macOS Cocoa single-line NSTextField that implements the Float Label Pattern"
   s.description  = <<-DESC
-    A macOS Cocoa single-line NSTextField that implements the Float Label Pattern.
+    A macOS Cocoa single-line NSTextField that implements the Float Label Pattern. Supports secure edit fields.
   DESC
   s.homepage     = "https://github.com/dagronf/DSFFloatLabelledTextControl"
   s.license      = { :type => "MIT", :file => "LICENSE" }

README.md

@@ -1,6 +1,6 @@
 # macOS Float Label Pattern Text Field
 
-A macOS Cocoa single-line NSTextField that implements the Float Label Pattern.  You can read about the float pattern [here](http://mds.is/float-label-pattern/). Usable in Swift and Objective-C projects.
+A macOS Cocoa single-line NSTextField that implements the Float Label Pattern.  You can read about the float pattern [here](http://mds.is/float-label-pattern/). Usable in Swift and Objective-C projects.  Supports secure edit fields.
 
 ![](https://img.shields.io/github/v/tag/dagronf/DSFFloatLabelledTextControl) ![](https://img.shields.io/badge/macOS-10.11+-red) ![](https://img.shields.io/badge/Swift-5.0-orange.svg)
 ![](https://img.shields.io/badge/License-MIT-lightgrey) [![](https://img.shields.io/badge/pod-compatible-informational)](https://cocoapods.org) [![](https://img.shields.io/badge/spm-compatible-brightgreen.svg?style=flat)](https://swift.org/package-manager)
@@ -33,6 +33,7 @@ Copy the `DSFFloatLabelledTextField.swift` into your project.  This class inheri
 * Drop in a new Text Field into your canvas and set its class to `DSFFloatLabelledTextField`
 * Set the size and style of your primary font as you would a regular text field
 * Set the size of the secondary font via the attributes inspector for the control
+* If you want a secure field, set the `isSecure` property on the control
 
 ### Dynamically
 
@@ -53,12 +54,36 @@ This control inherits from `NSTextField`, so all `NSTextField` functionalities (
 
 `placeholderSpacing` - the distance between the text field text and the floating label (in px)
 
+## Delegate Handling
+
+You can specify a delegate (`floatLabelDelegate`), either programatically or via Interface Builder, to receive additional information regarding the actions of the control.
+
+```swift
+@objc public protocol DSFFloatLabelledTextFieldDelegate: NSObjectProtocol {
+   /// Called when the label is shown or hidden
+   @objc optional func floatLabelledTextField(_ field: DSFFloatLabelledTextField, didShowFloatingLabel didShow: Bool)
+   /// Called when the field becomes or loses first responder status
+   @objc optional func floatLabelledTextField(_ field: DSFFloatLabelledTextField, didFocus: Bool)
+   /// Called when the content of the field changes
+   @objc optional func floatLabelledTextFieldContentChanged(_ field: DSFFloatLabelledTextField)
+}
+```
+
+## Screenshot
+
+<img src="https://github.com/dagronf/dagronf.github.io/blob/master/art/projects/DSFFloatingLabel/light-mode-secure-field.png?raw=true" alt="drawing" width="265"/>
+
+
 ## Credits
 
 * Pattern devised by [Matt D. Smith](http://mds.is/matt/)
 * Read about the pattern [here](http://mds.is/float-label-pattern/)
 * [UITextField implementation](https://github.com/jverdi/JVFloatLabeledTextField)
 
+## Versions
+
+* `1.8.0` Added secure text field support, delegate support
+
 ## License
 
 ```