sync app for sync the twitter to weibo.(No UI needed)

 requirement: 1. there would be a page for user to set up the twitter and weibo account. 2. Can sync the normal tweet to weibo. 3. Can sync RT tweet to weibo.

 better to have: 1. Can sync @ function. (change the twitter account to weibo account in tweet if the user use our service.) 2. Can sync the photo.

 twitter Oauth
 reading tiwtter timeline
 Weibo Oauth
 post message to Weibo
 aotomatic reading from twitter and pusting to weibo