Added .gitignore.
Added .gitignore.

BlueCrystalLabs/bx,mmicko/bx,bkaradzic/bx,MikePopoloski/bx,septag/termite,u-engine/bx,pigpigyyy/bx,septag/termite,attilaz/bx,attilaz/bx,bkaradzic/bx,septag/bx,ShuangxueBai/bx,pigpigyyy/bx,u-engine/bx,OlegOAndreev/bx,BlueCrystalLabs/bx,dariomanesku/bx,OlegOAndreev/bx,septag/bx,MikePopoloski/bx,septag/termite,septag/termite,mmicko/bx,septag/termite,fluffyfreak/bx,coconutxin/bx,dariomanesku/bx,0-wiz-0/bx,0-wiz-0/bx,ShuangxueBai/bx,septag/termite,fluffyfreak/bx,coconutxin/bx