Purpose:
Presence is a Twitter client originally started as an assignment for CS193P. It has since moved away from strictly being based on those assignments to explore other aspects of iPhone Development.
Building/Running:
Presence depends on the fmdb sqlite3 wrapper written by Gus Mueller and json-framework by Stig Brautaset. To that end, I have forked the github repositories for those projects and included them as git submodules. The steps to get up and running are:
git clone --recursive git://github.com/adamvduke/Presence.git
cd Presence
git submodule init
git submodule update
The submodules will be their own git repositories in the directories Presence/External/fmdb and Presence/External/JSON