Create a virtualenv for python 3:
$ virtualenv -p python3 .virtualenv
Activate the virtualenv:
$ source ./.virtualenv/bin/activate
Install dependencies with pip:
$ pip install -r requirements.txt
Or if you want to run with postgres:
$ pip install -r requirements_pg.txt
Copy the config example file to config.py:
$ cp config.example.py config.py
Replace the data in config.py as needed.
Run the application:
$ ./run
Check the URL given on the command line to make sure it works.