adding some new locations

Hi, I came across this project from the Coadec newsletter.  I'm new to web development and github in general (currently trying to learn and do a career change! see londonnewbgirl.blogspot.co.uk) and love living and hanging out in Old Street, so thought I'd try and contribute in a small way....

hope my edits make sense...it works locally on my laptop, though the google map at the bottom of each page doesn't seem to render