$5.$ Word Frequency

Write a program that reads the contents of a text file. The program should create a dictionary

in which the keys are the individual words found in the file and the values are the

number of times each word appears. For example, if the word $$the$$ appears $128$ times,

the dictionary would contain an element with 'the' as the key and $128$ as the value. The

program should either display the frequency of each word or create a second file containing

a list of each word and its frequency.