My Hammerspoon configuration. Requires 'caffeine.lua' as seen below.

caffeine.lua

local obj = {}
obj.__index = obj

obj.menuBarItem = nil

function obj:start()
    self.menuBarItem = hs.menubar.new()

    self.menuBarItem:setClickCallback(self.clicked)
    self.setDisplay(hs.caffeinate.get("displayIdle"))

    return self
end

function obj.setDisplay(state)
    if state then
	   obj.menuBarItem:setTitle("AWAKE")
--      result = obj.menuBarItem:setIcon("caffeine-on.pdf")
    else
	   obj.menuBarItem:setTitle("SLEEPY")
--      result = obj.menuBarItem:setIcon("caffeine-off.pdf")
    end
end

function obj.clicked()
    obj.setDisplay(hs.caffeinate.toggle("displayIdle"))
end

return obj

init.lua

-- Hotkey Definition - CAPS is mapped to CTRL using karabiner --
hyper = {"ctrl"}
hyper_cmd = {"ctrl", "cmd"}
hyper_shft = {"ctrl", "shift"}

-- Disable Animations
hs.window.animationDuration = 0

-- Caffeine --
caffeine = require("caffeine"):start()

-- init grid --
hs.grid.MARGINX = 0
hs.grid.MARGINY = 0
hs.grid.setGrid('2x2')

-- Launch Applications --
hs.hotkey.bind(hyper, 'T', "Terminal", function () hs.application.launchOrFocus("Terminal") end)
hs.hotkey.bind(hyper, 'R', "Sublime Text", function () hs.application.launchOrFocus("Sublime Text") end)
hs.hotkey.bind(hyper, 'S', "Safari", function () hs.application.launchOrFocus("Safari") end)
hs.hotkey.bind(hyper_cmd, 'S', "Spotify", function () hs.application.launchOrFocus("Spotify") end)
hs.hotkey.bind(hyper, 'F', "Finder", function () hs.application.launchOrFocus("Finder") end)
hs.hotkey.bind(hyper_cmd, 'X', "Xcode", function () hs.application.launchOrFocus("Xcode") end)
hs.hotkey.bind(hyper_cmd, 'C', "Google Chrome", function () hs.application.launchOrFocus("Google Chrome") end)
hs.hotkey.bind(hyper_cmd, 'V', "Visual Studio Code", function () hs.application.launchOrFocus("Visual Studio Code") end)
hs.hotkey.bind(hyper_cmd, 'M', "Caprine", function () hs.application.launchOrFocus("Caprine") end)
hs.hotkey.bind(hyper_cmd, 'D', "Dash", function () hs.application.launchOrFocus("Dash") end)

-- Organize Windows --
hs.hotkey.bind(hyper, 'W', hs.grid.maximizeWindow)

--hs.hotkey.bind(hyper_cmd, 'D', hs.grid.pushWindowRight)
--hs.hotkey.bind(hyper_cmd, 'A', hs.grid.pushWindowLeft)

function toUpper ()
	function fn (cell)
		cell.y = 0
		cell.x = 0
		cell.w = 2
		cell.h = 1
		return hs.grid
	end
	hs.grid.adjustWindow(fn)
end
hs.hotkey.bind(hyper_shft, 'W', toUpper)

function toLower ()
	function fn (cell)
		cell.y = 1
		cell.x = 0
		cell.w = 2
		cell.h = 1
		return hs.grid
	end
	hs.grid.adjustWindow(fn)
end
hs.hotkey.bind(hyper_shft, 'S', toLower)

function toUpperLeft ()
	function fn (cell)
		cell.y = 0
		cell.x = 0
		cell.w = 1
		return hs.grid
	end
	hs.grid.adjustWindow(fn)
end
hs.hotkey.bind(hyper, 'Q', toUpperLeft)

function toUpperRight ()
	function fn (cell)
		cell.y = 0
		cell.x = 1
		cell.w = 1
		return hs.grid
	end
	hs.grid.adjustWindow(fn)
end
hs.hotkey.bind(hyper, 'E', toUpperRight)

function toLowerRight ()
	function fn (cell)
		cell.h = 1
		cell.w = 1
		cell.y = 1
		cell.x = 1
	end
	hs.grid.adjustWindow(fn, window)
end
hs.hotkey.bind(hyper, 'D', toLowerRight)

function toLowerLeft ()
	function fn (cell)
		cell.h = 1
		cell.w = 1
		cell.y = 1
		cell.x = 0
	end
	hs.grid.adjustWindow(fn, window)
end
hs.hotkey.bind(hyper, 'A', toLowerLeft)

-- Window Hints
hs.hotkey.bind(hyper, '.', hs.hints.windowHints)