Assignment 9
	
	In my data dir, I have the following file:
	
	my script is named: pop
	
	
	POP.csv
	  county code, 
	  country ranking (by population)
	  county name
	  population (in thousands)
	  
	please write a script to display
	 all countries with a population greater than 4 million
	 
	 can you use a command line arg to pass the "cutoff" value
	    in this example the cutoff value is 4 million
	    
	 I suggest you add if statement to check for ???
	 
	 
      Challenge  
      
         can you output the report in "reverse" order?
         can you use a command line argument to select reverse order?