File Word Count

Write a program that takes a filename and a parameter n and prints the n most common words in the file, and the count of their occurrences, in descending order.

For example:

	word_stats("article.txt", 5)

	"the", 39
	"device", 21
	"start", 14
	"pidgeon", 9
	"box", 3

Import the included article.txt file and use that to test your program. What are the top 10 words and their frequency?