Updated podspec

Author: kcharwood

MMDrawerController.podspec

@@ -1,11 +1,11 @@
 Pod::Spec.new do |s|
   s.name         = "MMDrawerController"
-  s.version      = "0.5.6"
+  s.version      = "0.5.7"
   s.summary      = "A lightweight, easy-to-use side drawer navigation controller."
   s.homepage     = "https://github.com/mutualmobile/MMDrawerController"
   s.license      = { :type => 'MIT', :file => 'LICENSE' }
   s.author       = { "Kevin Harwood" => "[email protected]" }
-  s.source       = { :git => "https://github.com/mutualmobile/MMDrawerController.git", :tag => "0.5.6" }
+  s.source       = { :git => "https://github.com/mutualmobile/MMDrawerController.git", :tag => "0.5.7" }
   s.platform     = :ios, '5.0'
   s.requires_arc = true
   s.screenshots = [ "http://mutualmobile.github.io/MMDrawerController/ExampleImages/example1.png",