readme: instructions for running
updated to use git-deps to pull my branch of clatrix

* fixed reshape in clatrix
ugh whitespace
net: wrote set-images & unroll-to-vec
net: refactored cost-and-gradient function
net test: unroll-to-vec
net: fixed paint method - now paints num trained
net: added unroll-theta-to-vec & roll-theta-to-mat
net test: added unroll-theta-to-vec-test
adding test to reroll theta … m/reshape is mutating the matrix