Changed iOS version and SASlideMenu version

SASlideMenu.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = 'SASlideMenu'
-  s.version      = '1.2.1'
+  s.version      = '1.3.1'
   s.license      = { :type => 'MIT', :file => 'README.md' }
   s.summary      = 'A simple library to create sliding menus that can be used in storyboards and support static cells.'
   s.homepage     = 'https://github.com/stefanoa/SASlideMenu'
@@ -11,7 +11,7 @@ Pod::Spec.new do |s|
   s.description  =  'A simple library to create sliding menus that can be used in storyboards and support static cells.
                     Sliding menus are used in a number of  popular applications like Facebook, Path 2.0, GMail, Glassboard and many others.'
 
-  s.platform     = :ios, '5.1'
+  s.platform     = :ios, '6.1'
   s.source_files = 'SASlideMenu/SASlideMenu'
 
   s.requires_arc = true