add preview plugin
stop if FileReader is not supported
let jQuery set the inner text content
namespace preview class names
$.html is not safe
consistent code style
line up comma with r
Merge pull request #2 from fusionbox/preview_plugin

Preview plugin
update readme to doc the preview plugin
removing "support" for non-image file previews.
use jquery to add filename to the default templateCb return
make preview plugin more extensible by wrapping the templateCb instead of overriding it.
attr, not attrs
Firefox double the file bugfix
- made passing params more verbose
- added customization options to readme
readme update
making it possible to pass configuration as object or as two separate parameters
Merge branch 'maciej'

* maciej:
  making it possible to pass configuration as object or as two separate parameters
  readme update
  - made passing params more verbose - added customization options to readme
Added more documentation
Added 2-clause BSD license