add mission statement to landing page

[iancrowther]

Something similar to the new Barcelonajs site

[simonmcmanus]

what is the copy?

how should it look?

[iancrowther]

can we not lift the preview for now?

[simonmcmanus]

@iancrowther - I think we should provide the copy for the issue. We cannot expect beginners to define the LNUG mission statement

[iancrowther]

yeah that's fair enough, I can pick this up