updated gitignore to ignore compiled files
updated gitignore to ignore compiled files

ParticulateFlow/Palabos-PFM,ParticulateFlow/Palabos-PFM,ParticulateFlow/Palabos-PFM,ParticulateFlow/Palabos-PFM,ParticulateFlow/Palabos-PFM,ParticulateFlow/Palabos-PFM