A very, very basic introduction into distributed optimization

A very brief intro into distributed optimization where we discuss the setup of the problem, a distributed optimization algorithm and some intuition into the convergence. Typo's (comment if you find more!) In "a quick convergence proof", V_t should have a factor 1/2 in front of it; in dV_t/dt there should be no dt on the right-hand side, and in the final dV_t/dt bound it should be 2\mu_fV_t.