Other doc fixes

README.md

@@ -20,7 +20,8 @@ Python 3.
 $ sudo apt-get update
 $ sudo apt-get install python-pyqt5
 ```
-Make sure you got Python 3:
+**N.B.** Python 3 is now the default interpreter in most recent Linux
+distributions. Do not use Python 2! If unsure, check with:
 ```shell
 $ python -V
 ```
@@ -31,13 +32,13 @@ Then, simply call (if you are not in a GNU/Linux shell, you might need to put
 $ ./actuasim.py &
 ```
 
-Once launched, Actuasim will load a file `saved\_rooms.json` containing the
+Once launched, Actuasim will load a file `saved_rooms.json` containing the
 building configuration with all the KNX addresses. If this file does not
 exist, it is created with a default configuration composed of 2 rooms, each
 one has 2 blinds and two radiator valves.
 
 Whenever the application is closed, the building configuration with the
-current position of blinds and valves are stored in this `saved\_rooms.json`
+current position of blinds and valves are stored in this `saved_rooms.json`
 file.
 
 You can edit this it to set up your specific building configuration.

actuasim.py

-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-
+################################################################################
 import json
 import os
 import random
@@ -16,7 +16,7 @@ from actuasim.room import Room
 from actuasim.ui_actuasim import Ui_MainWindow
 from actuasim.knxserver import Knxserver
 from actuasim.command_handler import CommandHandler
-
+################################################################################
 
 __author__ = "Adrien Lescourt"
 __copyright__ = "HES-SO 2015, Project EMG4B"
@@ -24,7 +24,7 @@ __credits__ = ["Adrien Lescourt"]
 __version__ = "1.0.2"
 __email__ = "adrien.lescourt@gmail.com"
 __status__ = "Prototype"
-
+################################################################################
 
 class Actuasim(QMainWindow):