+ Added a handler for the entire application to share and use for doing things on background, worker threads, or when accessing the UI thread to update it.
+ Added a StartImageGridViewActivity to test the ImageGridViewActivity....should be removed later for production release
- Got the ImageGridViewActivity to display images from the internet when it is started by a proper starting intent
- TODO: start the ImageSwipeViewActivity when a thumbnail of a cat is tapped
- TODO: make the thumbnails displayed in this activity bigger..and possible other aesthetic things