Both
Lua Code:
local f = CreateFrame("Frame", "Addon_1_Name_Frame", UIParent, "BasicFrameTemplateWithInset")
Lua Code:
local f = CreateFrame("Frame", "Addon_2_Name_Frame", UIParent, "BasicFrameTemplateWithInset")
Probably not a lot of point changing the addon title language unless you are going to post it in language specific sites under different names. If you are just hosting it on WowInterace/Curse/Wago people will find it using the single addon name which would be the same in any language so may as well be the title.
To add a title, after:
Lua Code:
local f = CreateFrame("Frame", "SimpleScrollFrameTableDemo", UIParent, "BasicFrameTemplateWithInset")
add:
Lua Code:
f.Title = f:CreateFontstring(nil, "ARTWORK", "GameFontNormal")
f.Title:SetPoint("TOP", 0, -4)
f.Title:SetText("Your Addon Name")