Minor UI improvement for input dialog
Minor UI Update: Added done button for user friendly interactivity.
Renamed constants because it was very generic name. Also added some documentations.
Minor bug fix - input text is properly sent when "Done/Process" button is pressed
Constants class name change on last commit
Added an util class to do app lookup by package name and other minor tasks
Implemented basic error handling. Updated layout, added image and necessary methods. Fixes #11 and Fixes #1