Built seed GUI with icons;
Updated prefabs with guiTextures;

Player now has a PlayerGUI script;
Merge branch 'master' of https://github.com/ifdm/siphon

Conflicts:
	Assets/Graphics/GUI/seed-icon-bm.png.meta
	Assets/Graphics/GUI/seed-icon-ft.png.meta
	Assets/Graphics/GUI/seed-icon-gv.png.meta
	Assets/Graphics/GUI/seed-icon-rb.png.meta