Started migration of the application layout to FXML.
Only basic image loading in the inputImageView done.
Renamed FXMain to OldFXMain. Need to keep this for the moment to migrate
the functions out of this
Basic fxml for the application. Just the start of the migration
Zooming of input image is working.
Zomm function is written to use with output image also
Output Image View is in the controller.
Tool tip added to display i'ts index. 
Alt Scroll used to change the index.
Tool tip value is bound to the output image index.

Note: No output images are being displayed yet
Output images are being displayed.
Output images are scroallable.
Output images are zoomable.
Code formatting
Added TODO
Removed teh OldFXMain class. Have migrated everything out of it or have
just implemented it another way.
Merge pull request #9 from p3t3c/large_images_in_ui

Large images in ui
Addresses issues #3 and #8