Find the most commonly used words in a piece of writing.
#How to Run:
./WordFreq.py <input.txt> e.g ./WordFreq.py lightinaugust.txt
##The script outputs the 200 most frequently used words:
Total Length of the Novel: 81940
Total number of words used in the Novel: 11029
time;382
house;298
byron;292
never;285
thought;278
woman;264
...
##The script also calculates the 100 seldom most words used in the text:
raining
dollar
sunbonnet
yellow
four
woods
clotted
hanging
durn
increase
shaving
sinking
swivel
faltered
foul
screaming
....