Python training and test example

[kshalini]

@KaimingHe

thanks for putting this repo and repo together. its great to see this coming along quickly.

my request is if you could please post a simple Python example script for running training and testing on a sample mini data set (say 5 object classes of 50 images each), it would be really great to get going.

this would straightaway help address all the unknowns with setting the right parameters for training.

also if you could publish a train_val.prototxt, it would help.

[bayesfactor]

I'm also looking for a train_val.prototxt -- thanks!