Added an option to interval of number files to be printed. 	- Adds an option -I to  interval 	  of number of files to be printed 	- Organised the help message to more friendly.
Added an option to interval of number files to be printed.
	- Adds an option -I to  interval
	  of number of files to be printed
	- Organised the help message to more friendly.

vijaykumar-koppad/Crefi