README updated with instructions how to build docs
README updated with instructions how to build docs

hpfem/hermes1d,certik/hermes1d-llnl,certik/hermes1d,certik/hermes1d-llnl,certik/hermes1d,certik/hermes1d-llnl,hpfem/hermes1d,certik/hermes1d,hpfem/hermes1d