Update ReadMe to include Python >2 <3 as dependency.

[xarrijorge]

Python 2.3 or 2.7 is required to run the project. I got error cuz I had 3.6 installed locally.

[usernam3]

Hi, glad to see you here again, thank you for the report :)
Did you have this problem while installing the docker-compose tool OR after you tried to start the containers ?

[xarrijorge]

Both when I run npm install and installing docker-compose tool. Maybe there is someting I'm not doing? I just can't get the project to start. I'm not experienced with docker though so that may be the problem.

[usernam3]

Can you please take a look at the 36eb360 , does the new documentation help to solve any of the problems that you had?
I also think that the project should have the brief description on how to install and start working on the project.
Do you still have problems with the environment? Maybe you can paste the commands and errors here and we will try to solve the problems together.