Thanks for this great plugin, Mehedi!
I had some trouble making the plugin show the buttons where I (or rather: my client) wanted them, but your tipps, gleaned from several support forums, were very helpful.
I have both settings, "Display Sharify buttons at the top of posts" and "Display Sharify buttons at the bottom of posts", under the General Settings of Sharify set to off, told my client to use the shortcode...
...in those blog posts where he needs the social buttons (probably every one) and added the line...
<?php echo do_shortcode("[sharify]"); ?>
...in my custom attachment.php and -- voilà! -- I get Sharify buttons that let the users of my client's website share attachment images and news entries.
It took a few minutes to set it up like this (plus an hour of Google-ing), but it works very well.
So, this may not be the one and only plugin for social media buttons, but it definitely serves me well, especially when one considers the low price (of zero dollars).