Picking on readme

readme.md

@@ -19,18 +19,28 @@ git checkout develop
 
 ## Install Python3
 
-Version >3.5 is needed. Installation instructions at:
-https://www.python.org/
+Python version >3.5, pip and virtualenv are needed.
+
+Install with apt:
+```
+sudo apt install python3
+sudo apt install python3-pip
+sudo pip install virtualenv
+```
 
 ## Install PostgreSQL
 
-Version >9.5 is needed. Installation instructions at:
+Version >9.5 is needed. More info at:
 https://www.postgresql.org/
 
+Install with apt:
+```
+sudo apt install postgresql
+```
+
 ## Install dependencies
 
-The following Debian packages are needed.
-If you're using something else, find the corresponding packages
+The following packages *might* need to be installed depending on your system. Find the corresponding packages
 from your distribution's repository.
 
 * python3-dev
@@ -38,6 +48,8 @@ from your distribution's repository.
 * python3-cffi
 * libssl-dev
 
+The packages shouldn't be needed on Ubuntu 16.04, which is the most tested platform.
+
 Install them with apt:
 
 ```
@@ -47,19 +59,20 @@ sudo apt install python3-dev libffi-dev python3-cffi libssl-dev
 
 ## Create a virtual environment for python
 
+Create a virtualenv in the parent directory.
 ```
 virtualenv -p python3 ../virtualenv.sikweb
 ```
 
-### Activate virtualenv
+## Activate virtualenv
 
-Assuming we are at the root of this repository and virtualenv is one level above:
+Assuming we are at the root of this repository and virtualenv is one level above.
 
 ```
 . ../virtualenv.sikweb/bin/activate
 ```
 
-## Install wizard
+## Run install wizard
 
 Run the install wizard with