L2SS-434: Added dependencies

docs/source/usage/installation.rst

 Installation
 ==================
 
+You will need the following dependencies installed:
+
+- docker
+- docker-compose
+- git
+- make
+
 You start with checking out the source code, f.e. the master branch, as well as the git submodules we use::
 
   git clone https://git.astron.nl/lofar2.0/tango.git
@@ -34,7 +41,7 @@ You should see the following state:
 
 If not, you can inspect why with `docker logs <container>`. Note that the containers will automatically be restarted on failure, and also if you reboot. Stop them explicitly to bring them down (`make stop <container>`).
 
-Initialisation
+Post-boot Initialisation
 ----------------
 
 The following procedure describes how to initialise the system, which is required after installation and after a system reboot.