Rules Page modifications. By Geoff

Modifications to the rules page including removal of the GIF images and the addition of
two rule images per rule. Minor layout modifications have been made in order to make
this possible.
Arrow and text added to the rules page. By Geoff

Between the two images for each rule, an arrow has been added (in an
SVG format) along with some accompanying text describing what can be seen
to the user.
Merge branch 'feature/#87_home_page' of https://github.com/CO600GOL/Game_of_life into feature/#87_home_page
Added text and a video placeholder to homepage

By Geoff

Added some text to the home page as well as adding a video placeholder
to our homepage which will eventually be replaced by a video introduction
to the Project Coway Game of Life.