Spine runtime

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>
Minor readme change, bit of optimisation and organisation

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>
DisplayMap positioning fixes, entirely new (deferred) lighting/rendering engine

Signed-off-by: Sam Hellawell <sshellawell@gmail.com>