Piwik Code on Every Page?

I would like to know if I was supposed to add Piwik code to the bottom of every page on my website that is on the same domain?

My site is new and get less than 20 hits per day but it records my IP in the stats. I am developing the site and my FTP client and myself are throwing the stats off. Is there a way to exclude my IP?

Thanks! Awesome Tool!