Breaking: QuarterBukkitIntegration No Longer Disables Calling Plugin

Removed: Plugins which call the QuarterBukkitIntegration.integrate() method no longer get disabled if the integration class can't install QuarterBukkit-Plugin. Warning: This may break some plugins and leave them enabled although the shouldn't be!
Overhauled README

Fixed: The README file was overhauled.
Multiple Integration Calls

Fixed: Multiple plugins can now request the integration of QuarterBukktit using the QuarterBukkitIntegration utility.