bump version to 4.2.0

KeychainAccess.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'KeychainAccess'
-  s.version          = '4.1.0'
+  s.version          = '4.2.0'
   s.summary          = 'KeychainAccess is a simple Swift wrapper for Keychain that works on iOS and OS X.'
   s.description      = <<-DESC
                          KeychainAccess is a simple Swift wrapper for Keychain that works on iOS and OS X.

Lib/KeychainAccess/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>4.1.0</string>
+	<string>4.2.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>