Go to %appdata%\Factorio\mods\Foreman_1.1.5 on your computer.
If it's a .zip file, you can extract it and delete the .zip, factorio will recognize it whether it's zipped or not. Open control.lua, go to line 1667 in toggleGui(event_), change it from this:
if global.unlocked[game.players[event.player_index].force.name] then
to this:
if true then
Be sure to preserve the four spaces at the beginning, and remember ctrl+T to show the dialog. You might also want to change info.json to show that you edited it, to avoid later confusion, such as changing:
"author":"Choumiko (originally: JamesOFarrell)",
to:
"author":"Choumiko EDITED BY ME",
That way if the game "updates" it to a later version, you can see the description revert and know you have to re-do the edit.