Add install steps

docs/index.rst

@@ -12,7 +12,7 @@ Documentation content:
    :maxdepth: 2
 
    intro
-
+   install
 
 
 Indices and tables

docs/install.rst

@@ -0,0 +1,25 @@
+.. _install:
+
+Installation
+============
+
+Requirements
+------------
+
+1. You must have `alignak-backend`_ and `alignak-webui`_ installed before running this app.
+
+2. **You must have a system compatible with GTK to run it !**
+
+3. Install python and pip::
+
+   sudo apt-get install python python-pip
+
+4. You have to install requirements with pip::
+
+   pip install -r requirements.txt
+
+| **WARNING:** if you encounter problems with `alignak_backend_client`_, download it an run *setup.py*
+
+.. _alignak-backend: http://alignak-backend.readthedocs.io/en/latest/
+.. _alignak-webui: http://alignak-web-ui.readthedocs.io/en/latest/
+.. _alignak_backend_client: https://github.com/Alignak-monitoring-contrib/alignak-backend-client

docs/intro.rst

@@ -5,8 +5,8 @@ Introduction
 
 This project is an Alignak-App.
 
-It's an appindicator for `Alignak`_. It will display number of Hosts (and in future version number of Services) who are DOWN, UNKNOW or UP.
-
-.. _Alignak: https://alignak-monitoring.github.io
+It's an appindicator for `Alignak`_. It will display number of Hosts (and in future version number of Services) who are DOWN, UNKNOWN or UP.
 
 If some of them change to DOWN, you'll be notified directly on your desktop.
+
+.. _Alignak: https://alignak-monitoring.github.io