Since the meeting is so short, they obviously liked you and just wanted to check in to gauge your interest and possibly discuss offer, start date etc.  In that case, i would be prepared short blurb to reiterate your interest in the company, what you can offer to the company.  More importantly, be prepared to answer questions around offer package, start date etc.  When i hire people, i would usually extend an verbal offer to gauge the interest level before proceed with getting the written offer out. 

Best of luck