Hammerspoon script to launch and tile apps

saeven.lua

local workApplications = { 'Mail','HipChat','PhpStorm','Safari','Charles'}
local workApplicationWatcher;


hs.hotkey.bind({"cmd", "alt", "ctrl"}, "H", function()
  hs.notify.new({title="Hammerspoon", informativeText="Setting home layout"}):send()
  local homeMonitor = "LG ULTRAWIDE"
  local windowLayout = {
        {"PhpStorm", nil, homeMonitor, {x=0, y=0, w=0.6, h=1},    nil, nil},
        {"Charles", nil, homeMonitor, {x=0.6, y=0.6, w=0.4, h=0.4},   nil, nil},
        {"Safari", nil, homeMonitor, {x=0.6, y=0, w=0.4, h=0.6}, nil, nil},        
    }
    hs.layout.apply(windowLayout)
end)



--
-- Try to setup the workplace workflow
--
hs.hotkey.bind({"cmd", "alt", "ctrl"}, "W", function()
	
	hs.notify.new({title="Hammerspoon", informativeText="Starting work applications"}):send()

	--
	-- Discover which apps are needed (not launched or visible)
	--
	local neededApps = {}
	for key, value in pairs(workApplications) do
		local app = hs.application.find(value);
		if app == nil then
			table.insert(neededApps,value)
		else
			local windows = app:allWindows();
			for s, t in pairs(windows) do
				t:raise()
			end	
		end	
	end	

	
	if #neededApps == 0 then
		doWorkLayout()
	else
		workApplicationWatcher = hs.application.watcher.new(appLaunched)
		workApplicationWatcher:start()

		for key, value in pairs(neededApps) do			
			hs.application.launchOrFocus(value)
		end	

	end

end)


--
-- Watcher for launching apps, when app launches are required
--
function appLaunched( appName, eventType, app )
	if eventType ~= hs.application.watcher.launched then
		return
	end		

	local launchCount = 0
	for key, value in pairs(workApplications) do
		if hs.application.find(value) ~= nil then	
			launchCount = launchCount + 1
		end	
	end	

	if launchCount == #workApplications then
		workApplicationWatcher:stop()
		doWorkLayout()
	end		
end


--
-- Success, set up the work layout
--
function doWorkLayout()
	local laptopMonitor = "Color LCD"
	local samsungMonitor = "SyncMaster"    
	local lgMonitor = "LG IPS FULLHD"
	local windowLayout = {
	    {"Mail", nil, laptopMonitor, {x=0, y=0, w=1, h=0.5}, nil, nil},
	    {"HipChat", nil, laptopMonitor, {x=0, y=0.5, w=1, h=0.5}, nil, nil},
	    {"PhpStorm", nil, samsungMonitor, {x=0, y=0, w=1, h=1}, nil, nil },
		{"Safari",  nil, lgMonitor, {x=0,y=0,w=0.6, h=1}, nil, nil },
		{"Charles", nil, lgMonitor, {x=0.6,y=0,w=0.4, h=1}, nil, nil },		        
	}
	hs.notify.new({title="Hammerspoon", informativeText="Applying work layout"}):send()
	hs.layout.apply(windowLayout)
end	

but how can i launch a window for my app which need luanch?