Added a init/README.rst file, to explain how to use the project!

init/README.rst

+Install the requirements
+------------------------
+
+1)  Install all the Debian packages listed in dependances.deb
+    (also: sudo apt-get install postgresql-contrib)
+
+2)  Create a virtual enironnement with pyvenv: apt-get install python-virtualenv
+
+3)  Type: source [your virtual environment directory]/bin/activate
+
+4)  Do your work!
+
+5)  Type: deactivate
+
+
+Configure stuff
+---------------
+
+1)  ln -s [the project folder] /srv/gargantext
+
+2)  ln -s [your folder for tree tagger] [the project folder]/parsing/Tagger/treetagger
+
+Warning: for ln, path has to be absolute!
+
+
+In PostreSQL
+-------------
+
+1)  Ensure postgres is started: sudo /etc/init.d/postgresql start
+
+2)  sudo su postgres
+
+3)  psql
+
+4)  CREATE USER alexandre WITH PASSWORD 'C8kdcUrAQy66U';
+    (see gargantext_web/settings.py, DATABASES = { ... })
+    
+5)  CREATE DATABASE gargandb WITH OWNER alexandre;
+
+6)  Ctrl + D
+
+7)  psql gargandb
+
+6)  CREATE EXTENSION hstore;
+
+7)  Ctrl + D
+
+
+Populate the database
+---------------------
+
+python manage.py syncdb
+
+
+Start the Python Notebook server
+--------------------------------
+
+1)  In Pyvenv: python manage.py shell_plus --notebook
+
+2)  Work from your browser!
+
+
+Start the Django server
+-----------------------
+
+python manage.py runserver
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