Merge pull request #28 from RobertSullivan/master

Add tick count on main page
Missing changes
Merge branch 'master' of https://github.com/Softwire/game-off-2013
Tweak parameters, add oil power plant.
Change facility display default text to white
Add colour for oil plants.
Merge branch 'master' of https://github.com/Softwire/game-off-2013
sea levels increase when pollution above 100; decrease when pollution 0; forests absorb double pollution
Merge pull request #29 from jmulholland/gameStateUpdater

sea levels increase when pollution above 100; decrease when pollution 0;...
population will always increase unless it hits zero (remove threshold below which population remains constant)
Merge pull request #30 from jmulholland/gameStateUpdater

population will always increase unless it hits zero
Add gauges to UI
Add R&D