adding `me' method for Facebook, Github, Mixi, and Twitter

lib/rest-core/client/facebook.rb

@@ -70,6 +70,10 @@ def self.missing_token? error
 module RestCore::Facebook::Client
   include RestCore
 
+  def me query={}, opts={}
+    get('me', query, opts)
+  end
+
   def access_token
     data['access_token'] || data['oauth_token'] if data.kind_of?(Hash)
   end

lib/rest-core/client/github.rb

@@ -18,5 +18,14 @@
   end
 end
 
+module RestCore::Github::Client
+  include RestCore
+
+  def me query={}, opts={}
+    get('user', query, opts)
+  end
+end
+
+RestCore::Github.send(:include, RestCore::Github::Client)
 require 'rest-core/client/github/rails_util' if
   Object.const_defined?(:Rails)

lib/rest-core/client/mixi.rb

@@ -21,6 +21,10 @@
 module RestCore::Mixi::Client
   include RestCore
 
+  def me query={}, opts={}
+    get('2/people/@me/@self', query, opts)
+  end
+
   def access_token
     data['access_token'] if data.kind_of?(Hash)
   end

lib/rest-core/client/twitter.rb

@@ -64,6 +64,10 @@ def self.call env
 module RestCore::Twitter::Client
   include RestCore
 
+  def me query={}, opts={}
+    get('1/account/verify_credentials.json', query, opts)
+  end
+
   def tweet status, media=nil, opts={}
     if media
       post('https://upload.twitter.com/1/statuses/update_with_media.json',