Customize Facebook's sharer.php to pass metadata of wordpress post (thumbnail and title)

I created FB Share button for wordpress post but it does not fetch the metadata from the post. I would like get the thumbnail and the title of the post when clicking share button.

Here is the code I used for that button:

    <a href="http://ift.tt/136R2E6 the_permalink();?>&t=<?php the_title(); ?>" title="Share on Facebook.">

And here is a live website :

http://ift.tt/1JPaxUs

(You can see that it does not pass the permalink and title when clicking share of facebook button )

Any ideas how can I customize sharer.php attributes to pass the link to the post, title and thumbnail ?