killing gd_mf in favor of mf
added precomputed_prediction bit to example
initialized active_simulation to false, removed extra gd setup
moved MF setup after save/laod
fixed indexing of constant feature in audit
(currently broken) reduction-friendly mf
cleaned up mf.cc
removing special parse_args cases for matrix factorization, debugging
switching branches
debugging
constant now multipled by weights_per_problem
mf merge complete, nn test acting up
merged pull from JohnLangford/master, fixed mf
merged pull from JohnLangford/master
gd_mf -> mf
updated mf tests
+assuring travis build status
enable markdown
README -> README.md
some markdown