Fix requirements chapter.

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>
Remove additional section which won't be needed.

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>
Addjust architecture of whole system to new place in whole document.

TODO: Update description of base module section.

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>