Analyse the gender of OP and create a file for all the functions

[gurvanrenault]

- Add a new file "social_analysis.py" I add this file in order to separate functions and the main program in "reddit-relationships-bot.py". It will be easier to contribute in the future .

- Add new functions to analyse the gender of the original poster

analyse_gender_OP(post,men,women,tot_gender) Analyse the gender of the original poster with the format like [42F] ( female of 42 years old)

The goal of this function is to show the percentage of men and women who submit in /r/relationships

Here is a screenshot of the working program :