So I've decided that I'm going to build a pedal based off of THIS, and it seems pretty simple. I picked up all of the components, except I also got a foot switch to turn it on/off. My question is, how would I incorporate the switch into the circuit? I'd like to have the option. I'm essentially at rock bottom when it comes to electric circuits. Thanks for any help!

EDIT: SORRY, I would be building off of the V2.