Updated readme
Updated readme

Changed shields/badges to flat, minimal styles

GerHobbelt/Fluidbox,lukaserat/Fluidbox,mcanthony/Fluidbox,aguynamedirvin/Fluidbox,aguynamedirvin/Fluidbox,GerHobbelt/Fluidbox,mcanthony/Fluidbox,jgrummel/Fluidbox,jgrummel/Fluidbox,zonayedpca/Fluidbox,lukaserat/Fluidbox,zonayedpca/Fluidbox