update podspec for master branch

Author: nicolaschengdev

WYPopoverController.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = 'WYPopoverController'
-  s.version      = '0.1.3'
+  s.version      = '0.1.4-beta'
   s.summary      = 'An iOS Popover for iPhone and iPad. Very customizable.'
   s.description  = <<-DESC
                     WYPopoverController is for the presentation of content in popover on iPhone / iPad devices. Very customizable.
@@ -9,11 +9,11 @@ Pod::Spec.new do |s|
   s.license      = { :type => 'MIT', :file => 'LICENSE' }
   s.author       = { 'Nicolas CHENG' => 'nicolas.cheng.dev@gmail.com' }
 
-  s.source       = { :git => 'https://github.com/nicolaschengdev/WYPopoverController.git', :tag => '0.1.3' }
+  s.source       = { :git => 'https://github.com/nicolaschengdev/WYPopoverController.git' }
 
   s.source_files = 'WYPopoverController/*.{h,m}'
   s.requires_arc = true
 
-  s.ios.deployment_target = '7.0'
+  s.ios.deployment_target = '5.1'
   s.ios.frameworks = 'QuartzCore', 'UIKit', 'CoreGraphics'
 end