Create Dictionary

create_dic.py: builds a dictionary which maps the words to ids to simplify the analysis. It also builds a matrix with the email id, all the words which appear in the email, and their frequency in each email. The dictionary includes the number of emails where each word was found.

specialwords.py: found a small bug in the output writing, it's now fixed

dic_enron.py: removed all the white spacings at the end of each line