Added getMaterial & setMaterial to ents (inc holo)
Added getMaterial & setMaterial to ents (inc holo)

Fixes #30

Jazzelhawk/Starfall,INPStarfall/Starfall,Xandaros/Starfall,Ingenious-Gaming/Starfall,Jazzelhawk/Starfall,INPStarfall/Starfall,Ingenious-Gaming/Starfall,Xandaros/Starfall