Added install instruction for lief and known issues section
Added install instruction for lief and known issues section

FloatingGhost/MISP,devnull-/MISP,Rafiot/MISP,devnull-/MISP,Rafiot/MISP,SteveClement/MISP,Rafiot/MISP,MISP/MISP,SteveClement/MISP,FIRSTdotorg/MISP,MISP/MISP,FIRSTdotorg/MISP,TheDr1ver/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP,devnull-/MISP,TheDr1ver/MISP,Rafiot/MISP,SteveClement/MISP,FIRSTdotorg/MISP,FloatingGhost/MISP,FloatingGhost/MISP,SteveClement/MISP,TheDr1ver/MISP,TheDr1ver/MISP,FloatingGhost/MISP,devnull-/MISP,MISP/MISP,FIRSTdotorg/MISP