Merge branch 'modularisation'

* modularisation:
  Creating bullet factory, based heavily on the enemy factory.
  Reducing the max enemy count to 10.
  Moving debug grid into helpers.
Merge branch 'modularisation'

* modularisation:
  Removing todo message, as the work is complete.
Improved docs.
Merge branch 'master' of github.com:manix84/time-pilot into modularisation

* 'master' of github.com:manix84/time-pilot: