移除Zframework，准备使用submodule

Zframework/image.lua

@@ -1,25 +0,0 @@
-local IMG={}
-function IMG.init(list)
-    IMG.init=nil
-
-    setmetatable(IMG,{__index=function(self,name)
-        if type(list[name])=='table'then
-            self[name]={}
-            for i=1,#list[name]do
-                self[name][i]=love.graphics.newImage(list[name][i])
-            end
-        elseif type(list[name])=='string'then
-            self[name]=love.graphics.newImage(list[name])
-        else
-            LOG("No IMG: "..name)
-            self[name]=PAPER
-        end
-        return self[name]
-    end})
-
-    function IMG.loadAll()
-        for k in next,list do local _=IMG[k]end
-        IMG.loadAll=nil
-    end
-end
-return IMG