Bump version to 3.0.8

SmileLock.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "SmileLock"
-  s.version      = "3.0.7"
+  s.version      = "3.0.8"
   s.summary      = "A library for make a beautiful Passcode Lock View."
   s.description  = <<-DESC
                    1. Create a beautiful passcode lock view simply.
@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
 
   s.author             = { 'Rain' => '[email protected]' }
 
-  s.swift_version = "4.2"
+  s.swift_version = "5"
   s.platform     = :ios, '9.0'
   s.requires_arc = true
   s.source       = { :git => "https://github.com/recruit-lifestyle/Smile-Lock.git", :tag => s.version.to_s}