updated TextView internals to fix optional access error within text

MK.podspec

 Pod::Spec.new do |s|
   s.name = 'MK'
-  s.version = '1.27.6'
+  s.version = '1.27.7'
   s.license = 'AGPL-3.0'
   s.summary = 'Beautiful Material Design in Swift.'
   s.homepage = 'http://materialkit.io'

Sources/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.27.6</string>
+	<string>1.27.7</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

Sources/TextView.swift

@@ -422,7 +422,7 @@ public class TextView: UITextView {
 	/// Notification handler for when text changed.
 	internal func handleTextViewTextDidChange() {
 		if let p = placeholderLabel {
-			p.hidden = !text.isEmpty
+			p.hidden = !(true == text?.isEmpty)
 		}
 		
 		if 0 < text?.utf16.count {