Merge pull request #8 from Swamp-Ig/master

Real Fuels Improvements
Merge pull request #9 from Swamp-Ig/master

Add tank volume conversion - required for MFT.
Merge pull request #10 from Swamp-Ig/master

Bugfix
Update my Makefile for swamp-ig's changes.

I still need to figure out what to do with my Settings.cs.
Merge pull request #11 from Swamp-Ig/master

Engines integration with PP. Update message for tank.
Merge branch 'master' of https://github.com/NathanKell/ModularFuelSystem