My Hammerspoon configuration.

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

dual_monitor.lua

-- - Dual Monitor Hotkeys - --

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


-- - Dual Monitor Functions - --
function toEastMonitor()
    w = hs.window.frontmostWindow()
    w:moveOneScreenEast()
end

function toWestMonitor()
    w = hs.window.frontmostWindow()
    w:moveOneScreenWest()
end

function toNorthMonitor()
    w = hs.window.frontmostWindow()
    w:moveOneScreenNorth()
end

function toSouthMonitor()
    w = hs.window.frontmostWindow()
    w:moveOneScreenSouth()
end


dell_screen = hs.screen.find('DELL P2418D')
if dell_screen then
    x, y = dell_screen:position()
    if x == 0 then
        hs.hotkey.bind(hyper, 'O', toNorthMonitor)
        hs.hotkey.bind(hyper, 'L', toSouthMonitor)

    else
        hs.hotkey.bind(hyper, 'L', toEastMonitor)
        hs.hotkey.bind(hyper, 'K', toWestMonitor)
    end
end

hotkeys.lua

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

-- 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, '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)

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

-- Reload Hammerspoon Config --
hs.hotkey.bind(hyper_cmd, 'R', hs.reload)

-- Spotify --
-- Notification For Current Song --
function displayCurrentSpotifySong()
    hs.notify.new(nil, {
        alwaysPresent = true,
        autoWithdraw = true,
        title = hs.spotify.getCurrentArtist(),
        informativeText = hs.spotify.getCurrentTrack() .. ' - ' .. hs.spotify.getCurrentAlbum(),
        subtitle = "Spotify"        
    })
    :setIdImage('/Applications/Spotify.app/Contents/Resources/Icon.icns')
    :send()
end

hs.hotkey.bind(hyper_cmd, 'P', displayCurrentSpotifySong)

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

-- Hotkeys --
require('hotkeys')

-- Grid Layout --
require('layout')

-- Dual Monitor Setup --
require('dual_monitor')

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

layout.lua

-- - Grid Layout - --

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

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

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

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)
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)
end
hs.hotkey.bind(hyper, 'A', toLowerLeft)