Add randomized emoji icon in demo

Author: wtmoose

Demo/Demo/ViewController.swift

@@ -63,7 +63,9 @@ class ViewController: UITableViewController {
         let warning = MessageView.viewFromNib(layout: .CardView)
         warning.configureTheme(.Warning)
         warning.configureDropShadow()
-        warning.configureContent(title: "Warning", body: "Consider yourself warned.", iconText: "🤔")
+        
+        let iconText = ["🤔", "😳", "🙄", "😶"].sm_random()!
+        warning.configureContent(title: "Warning", body: "Consider yourself warned.", iconText: iconText)
         warning.button?.hidden = true
         var warningConfig = SwiftMessages.Config()
         warningConfig.presentationContext = .Window(windowLevel: UIWindowLevelStatusBar)

README.md

@@ -66,7 +66,7 @@ view.configureDropShadow()
 
 // Set message title, body, and icon. Here, we're overriding the default warning
 // image with an emoji character.
-let iconText = ["🤔", "😳", "🙄", "😶"].sm_random()
+let iconText = ["🤔", "😳", "🙄", "😶"].sm_random()!
 view.configureContent(title: "Warning", body: "Consider yourself warned.", iconText: iconText)
 
 // Show the message.