title: Get number of twitter shares by url
body: <p>I have a question about twitter counting. Everything is so blury about this. 
  Simply:
  I have website with dynamic pages, button for tweet, people go to page, press tweet, it shows on they twitter, count on my page increase. but I need also on my backend to call to twitter and ask them how many shares i have already and count with that. </p>
  
  <p>It is concept for voting. People by sharing to facebook and twitter are voting for the website, so i need to take those votes and count them together. Please dont recommend me scripts like "sharecount" i tried and it has a lot of issues, and its not reliable.
  I can get easily likes from facebook but i dont seems to get how to get the number of shares from twitter.</p>
  
  <p>Also if anyone can help me, is there a way to get shares from unique users ? I noticed that if i tweet the site 50 times, the counter is 50. I would like it to count 50 tweets from 1 user as 1.</p>
  
  <p>Thanks for help!</p>