Adding a touch event to the typer code

I am using the code found here: http://developer.coronalabs.com/code/typer-way-type-text-out-letter-letter

and I have put it into a module as posted in a comment by Panc Software.  I would like to be able to add a touch event to this so that the text automatically completes when the touch begins.  I am not sure how to incorporate this into the module and call it from my scene.  Do I have to cancel a function or timer?

Just so you can see how I am using this in my scene, the (shortened) code is here:

[lua]

local index = math.random (1, #talkTable)

local sample=talkTable[index] 

length = string.len(sample)

local talk = display.newText("", a, b, native.systemFont, 16)

talk:setFillColor(1,1,1)

talk.x = screenLeft + 10

talk.y = centerY + 100

local function done() print(“I’m done!”) end

simpletyper.typer(sample, talk, 50, done) [/lua]

Thanks for any help!