Fix podspec.

Author: srdanrasic

ReactiveUIKit.podspec

@@ -1,17 +1,17 @@
 Pod::Spec.new do |s|
   s.name             = "ReactiveUIKit"
-  s.version          = "2.0.0-beta3"
+  s.version          = "2.0.0-beta4"
   s.summary          = "Reactive extensions for UIKit framework."
   s.homepage         = "https://github.com/ReactiveKit/ReactiveUIKit"
   s.license          = 'MIT'
   s.author           = { "Srdan Rasic" => "[email protected]" }
-  s.source           = { :git => "https://github.com/ReactiveKit/ReactiveUIKit.git", :tag => "v2.0.0-beta3" }
+  s.source           = { :git => "https://github.com/ReactiveKit/ReactiveUIKit.git", :tag => "v2.0.0-beta4" }
 
   s.ios.deployment_target       = '8.0'
   s.tvos.deployment_target      = '9.0'
 
   s.source_files      = 'Sources/*.swift', 'ReactiveUIKit/*.h'
   s.requires_arc      = true
 
-  s.dependency 'ReactiveKit', '~> 2.0.0-beta3'
+  s.dependency 'ReactiveKit', '~> 2.0.0-beta'
 end