Documentation

[c-martinez]

Suggestions from Martin Riedl:

nice to have, needs to be documented:

• lowercase switch
• provide one python file with the creation of the word2vec models (also add the lower() into that script)
• how to install the packages needed for the frontend
• describe how to change the parameters (aggWordsPerYear,...) and what this parameters are for
• add functionality to change port for the front and back end (although the parameter exists in the backend it is not properly set)
• use frontend as proxy for backend so only one port needs to be public!