more instructions on how to contribute
More comments in Makefile.config.example
minor README fix
Set leveldb options.max_open_files = 100. Fix #13 and #38
Merge pull request #154 from sguada/leveldb_max_open_files
Fix error message typo in SoftmaxWithLossLayer
Merge pull request #164 from t-abe/fix-typo
move imagenet splits + synsets to data
add imagenet mean file
file mnist
Make tools/ for core binaries, stow scripts/ in tools/extra

Collect core Caffe tools like train_net, device_query, etc. together in
tools/ and include helper scripts under tools/extra.
fix mnist comments in cifar example
file models
explain ignore, and ignore data, models, and examples

Data, models, and examples should not be versioned by default. Reference
versions of these are not to be casually committed.

Plus this makes for a better playground in examples without having to
worry about data, intermediate files, or experiments being accidentally
tracked.
swap ilsvrc data with fetch script
fetch caffe_reference_imagenet_model
include model checksum, you never know these days
everything in its right place
TODO cifar example
fix mnist, add deploy net example