update cokit.podspec

Author: NianJi

cokit.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "cokit"
-  s.version      = "1.1.1"
+  s.version      = "1.2.1"
   s.summary      = "coobjc's Foundationkit."
 
   s.description  = <<-DESC
@@ -21,8 +21,8 @@ Pod::Spec.new do |s|
   s.ios.deployment_target = '8.0'
   s.requires_arc = true
 
-  s.source =  { :git => "https://github.com/alibaba/coobjc.git", :tag => '1.1.1' } 
+  s.source =  { :git => "https://github.com/alibaba/coobjc.git", :tag => '1.2.1' } 
   s.source_files = 'cokit/cokit/**/*.{h,m}' 
 
-  s.dependency 'coobjc', '~> 1.1.0'
+  s.dependency 'coobjc', '~> 1.2.0'
 end