ShareKit (<a href="http://getsharekit.com/">http://getsharekit.com</a>) is a popular, open-source, drop-in solution for implementing social sharing features in iOS applications. ShareKit does not yet have support for selecting/capturing a photo and sending it as part of a Twitter message. However, thanks to ShareKit’s open-source nature and framework for extensibility, I was able to add this functionality without much fanfare, and still leverage the recently added img.ly support to link to that image. An overview of an initial form of this implementation is outlined in this blog post....