docs: add comments to install page

docs/install.rst

 Install
 =========
 
-[ ! -e "$SSH_AUTH_SOCK" ] && echo "Please forward the SSH agent." && exit 1
-# rabbitmq does not work with hostnames beginning w numbers
-hostname=$(hostname)
-case "$hostname" in
-    [0-9]*)
-    sudo tee /etc/hostname <<< c$hostname
-    sudo hostname c$hostname
-    sudo sed -i /etc/hosts -e "s/$hostname/c$hostname/g"
-esac
-sudo apt-get update
-sudo apt-get install --yes virtualenvwrapper postgresql git \
-    python-pip rabbitmq-server libpq-dev python-dev
-sudo sed -i /etc/postgresql/9.1/main/postgresql.conf -e '/#listen_addresses/ s/^#//'
-sudo /etc/init.d/postgresql restart
-sudo sed -i /etc/ssh/sshd_config -e '$ a AcceptEnv GIT_*'
-sudo /etc/init.d/ssh reload
-sudo -u postgres createuser -S -D -R circle
-sudo -u postgres psql <<<"ALTER USER circle WITH PASSWORD 'circle';"
-sudo -u postgres createdb circle -O circle
-source /etc/bash_completion.d/virtualenvwrapper
-git clone -b ng git@git.cloud.ik.bme.hu:circle/cloud.git circle
-mkvirtualenv circle
-cat >>/home/cloud/.virtualenvs/circle/bin/postactivate <<A
-export DJANGO_SETTINGS_MODULE=circle.settings.local
-export DJANGO_DB_HOST=localhost
-export DJANGO_DB_PASSWORD=circle
-export DJANGO_FIREWALL_SETTINGS='{"dns_ip": "152.66.243.60", "dns_hostname":
-            "localhost", "dns_ttl": "300", "reload_sleep": "10",
-            "rdns_ip": "152.66.243.60", "default_vlangroup": "publikus"}'
-A
-workon circle
-cd ~/circle
-pip install -r requirements/local.txt
-circle/manage.py syncdb --migrate --noinput
-circle/manage.py createsuperuser --username=test --email=test@example.org 
+.. highlight:: bash
 
+
+To get the project running on a development machine, create a new Ubuntu 12.04
+instance, and log in to it over SSH.
+
+(To be able to easily copy and paste the commands given, alias :kbd:`$` to nothing:
+:kbd:`alias '$='`.)
+
+
+To use git over SSH, we advise enabling SSH agent forwarding.
+On your personal computer check if ssh-agent is running (the command should
+print a process id)::
+  
+  $ echo $SSH_AGENT_PID
+  1234
+
+If it is not running, you should set up your login manager or some other
+solution to automatically launch it.
+
+Add your primary key to the agent (if it is not added by your desktop
+environment)::
+
+  $ ssh-add [~/.ssh/path_to_id_rsa]
+
+Log in to the new vm. The :kbd:`-A` switch enables agent forwarding::
+
+  $ ssh -A cloud@host
+
+You can check agent forwarding on the vm::
+
+  $ if [ -e "$SSH_AUTH_SOCK" ]; than echo "Agent forwarding works!"; fi
+  Agent forwarding works!
+
+If the hostname of the vm starts with a digit, you have to change it, because
+RabbitMQ won't work with it. ::
+
+  $ old=$(hostname)
+  $ new=c-${old}
+  $ sudo tee /etc/hostname <<<$new
+  $ sudo hostname $new
+  $ sudo sed -i /etc/hosts -e "s/$old/$new/g"
+
+Update the package lists, and install the required system software::
+
+  $ sudo apt-get update
+  $ sudo apt-get install --yes virtualenvwrapper postgresql git \
+      python-pip rabbitmq-server libpq-dev python-dev
+
+Set up PostgreSQL to listen on localhost and restart::
+
+  $ sudo sed -i /etc/postgresql/9.1/main/postgresql.conf -e '/#listen_addresses/ s/^#//'
+  $ sudo /etc/init.d/postgresql restart
+
+Also, create a new database and user::
+
+  $ sudo -u postgres createuser -S -D -R circle
+  $ sudo -u postgres psql <<<"ALTER USER circle WITH PASSWORD 'circle';"
+  $ sudo -u postgres createdb circle -O circle
+
+Enable SSH server to accept your name and address from your environment::
+
+  $ sudo sed -i /etc/ssh/sshd_config -e '$ a AcceptEnv GIT_*'
+  $ sudo /etc/init.d/ssh reload
+
+You should set these vars in your *local* profile::
+
+  $ cat >>~/.profile <<'END'
+  export GIT_AUTHOR_NAME="Your Name"
+  export GIT_AUTHOR_EMAIL="your.address@example.org"
+  export GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"
+  export GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"
+  END
+  $ source ~/.profile
+
+Allow sending it in your *local* ssh configuration::
+
+  # ~/.ssh/config
+  Host *
+    SendEnv GIT_*
+  
+
+Clone the git repository::
+
+  $ git clone git@git.cloud.ik.bme.hu:circle/cloud.git circle
+
+Set up virtualenvwrapper and the virtual environment for the project::
+
+  $ source /etc/bash_completion.d/virtualenvwrapper
+  $ mkvirtualenv circle
+
+Set up default settings and activate the virtual environment::
+
+  $ cat >>/home/cloud/.virtualenvs/circle/bin/postactivate <<END
+  export DJANGO_SETTINGS_MODULE=circle.settings.local
+  export DJANGO_DB_HOST=localhost
+  export DJANGO_DB_PASSWORD=circle
+  export DJANGO_FIREWALL_SETTINGS='{"dns_ip": "152.66.243.60", "dns_hostname":
+              "localhost", "dns_ttl": "300", "reload_sleep": "10",
+              "rdns_ip": "152.66.243.60", "default_vlangroup": "publikus"}'
+  END
+  $ workon circle
+  $ cd ~/circle
+
+Install the required python libraries to the virtual environment::
+
+  $ pip install -r requirements/local.txt
+
+Sync the database and create a superuser::
+
+  $ circle/manage.py syncdb --migrate --noinput
+  $ circle/manage.py createsuperuser --username=test --email=test@example.org 
+
+You can now start the development server::
+
+  $ circle/manage.py runserver '[::]:8080'
+
+To build the docs, install make, go to the docs folder, and run the building
+process. You might also want to serve it with Python's development server::
+
+  $ sudo apt-get install make
+  $ cd ~/circle/docs/
+  $ make html
+  $ cd _build/html
+  $ python -m SimpleHTTPServer 8080