Make sure before running installer.sh that all files are contained within a single directory.
Change log:
-Added a better tree preview of folders and files.
-Added a cleaner directory display.
-Added back the 'Version' text in '-h'.
-Updated the 'installer.sh' file.
-Folders and files will now be displayed and deleted sorted.
-Optimized some of the source code(to be more readable).
-Added more comments in the source code.