[DOC] fix readme for easy install.

README.md

@@ -13,76 +13,11 @@ Institute of Paris Île-de-France (ISC-PIF) and its partners.
 
 ## Installation
 
-### Front-End
+curl -sSL https://gitlab.iscpif.fr/gargantext/haskell-gargantext/raw/master/install-via-docker | sh
 
-Front-End is written in [Purescript](http://www.purescript.org/).
-Then Gargantext Front-End is developed in another git repository. 
-Before building the whole repo you need:
+## Use Cases
 
-1. Get the source code:
-    git clone https://gitlab.iscpif.fr/gargantext/purescript-gargantext.git
-2. cd purescript-gargantext
-3. read the README.md to install it
+### Multi-User with Graphical User Interface (Server Mode)
 
-
-### Back-End
-
-Back-End of Gargantext rely on several backends:
-1. Haskell backend with orchestrator
-2. Python backend
-3. Others backends
-
-Docker will be created to ease the backends installation.
-
-## Haskell Backend
-
-On Linux Debian (and Ubuntu?), install Dependencies.
-sudo apt-get install libbz2-dev lipq-dev
-(In the near future, we will use Nix.)
-
-### Database: install, configure and populate 
-
-1. Postgresql installation
-``shell
-sudo apt update && sudo apt install postgresql-9.6
-sudo su postgres
-psql
-``
-
-2. Configuration
-
-first create your local database:
-``sql
-create role gargantua with password "see gargantext.ini";
-create database gargandb with owner gargantua;
-``
-
-3. Populate
-
-second get a dump/schema of the database:
-md5sum gargandb.gz == 2c97ea9cfb67cd9767b779632a71e19f  gargandb.gz
-
-third insert the database in gargandb
-``shell
-gunzip gargandb.zip
-psql gargandb < gargandb
-``
-
-
-### Install Stack
-- https://docs.haskellstack.org/en/stable/README/
-- curl -sSL https://get.haskellstack.org/ | sh
-
-### Get the orchestrator library
-
-git clone https://github.com/np/servant-job.git
-
-### Get the clustering louvain library
-
-git clone https://gitlab.iscpif.fr/gargantext/clustering-louvain.git
-
-## Building and installing
-stack install
-
-## Run Gargantext
-~/.local/bin/gargantext --run Mock --port 8008
+### Command Line Mode
+(for now: simple cooccurrences computation)