[Cocoapods] Update podspec to 2.0-beta.1 version; reference AsyncDisplayKit Twitter account.

Author: appleguy

AsyncDisplayKit.podspec

@@ -3,9 +3,9 @@ Pod::Spec.new do |spec|
   spec.version      = '2.0-beta.1'
   spec.license      =  { :type => 'BSD' }
   spec.homepage     = 'http://asyncdisplaykit.org'
-  spec.authors      = { 'Scott Goodson' => 'scottgoodson@gmail.com', 'Ryan Nystrom' => 'rnystrom@fb.com' }
+  spec.authors      = { 'Scott Goodson' => 'scottgoodson@gmail.com' }
   spec.summary      = 'Smooth asynchronous user interfaces for iOS apps.'
-  spec.source       = { :git => 'https://github.com/facebook/AsyncDisplayKit.git', :tag => '1.9.90' }
+  spec.source       = { :git => 'https://github.com/facebook/AsyncDisplayKit.git', :tag => '2.0-beta.1' }
 
   spec.documentation_url = 'http://asyncdisplaykit.org/appledoc/'
 
@@ -15,7 +15,7 @@ Pod::Spec.new do |spec|
 
   spec.ios.deployment_target = '7.0'
 
-  # Uncomment when fixed: issues with tvOS build for release 1.9.8
+  # Uncomment when fixed: issues with tvOS build for release 2.0
   # spec.tvos.deployment_target = '9.0'
 
   # Subspecs
@@ -66,7 +66,7 @@ Pod::Spec.new do |spec|
   # Include optional PINRemoteImage module
   spec.default_subspec = 'PINRemoteImage'
 
-  spec.social_media_url = 'https://twitter.com/fbOpenSource'
+  spec.social_media_url = 'https://twitter.com/AsyncDisplayKit'
   spec.library = 'c++'
   spec.pod_target_xcconfig = {
        'CLANG_CXX_LANGUAGE_STANDARD' => 'c++11',