[Phanx]

Clique doesn't support #show or #showtooltip, or any other method of assigning an icon to custom macros. You can trick it by editing your saved variables file:

{
	["icon"] = "Interface\\Icons\\ability_shaman_cleansespirit",
	["macrotext"] = "/cast [@mouseover, harm]Purge;[@mouseover, dead]Ancestral Spirit;[@mouseover]Cleanse Spirit",
	["type"] = "macro",
	["key"] = "SHIFT-BUTTON1",
	["sets"] = {
		["default"] = true,
	},
},

There's nothing you can do about the name though; it just doesn't have any concept of a name or label in relation to custom macro bindings. You can get a slightly more useful display by taking advantage of the fact that lines starting with a # in a macro are considered comments and ignored when you actually run the macro:

# Cure
/cast [@mouseover, harm] Purge; [@mouseover, dead] Ancestral Spirit; [@mouseover] Cleanse Spirit

This won't affect the functionality but will make sure "# Cure" is shown first in Clique's list.