Remove the width and height being set to auto.  Checkboxes were being displayed with no height.  https://cloudup.com/cRtgMPSSHUC
Add ability to choose if you want the sharing widget to appear above or below the content
Remove the radio button input from the style that sets a border-radius of 0.  Having square radio buttons was confusing.
Merge branch 'modified' of git://github.com/dustyf/Async-Social-Sharing into dustyf-modified