0.8.5 Updates

Hey Reza! Working on a Cinder project in Windows using 0.8.5 - pulled your block today and found that it didn't work for two reasons:

the loadResource() method doesn't match - this wants an id and string. In all cases (loading fonts and images), this was easily replaced with just the string of the file you wanted to load.

events - you don't register/unregister for user interaction events anymore, but rather connect() and disconnect() signals to methods, so I updated the callback system in ciuicanvas.h this way. I haven't fully tested cancelling propagation and all that - just verified that sliders and buttons and stuff seem to work with the new system so I'm sending a pull request and then I've got to get back to my project :)

Small things - added a quickie icon and xml file to match the new Cinder Block format that works with Tinderbox.

This is only tested in Visual Studio 2012 Express on Windows 7.