Modify usage note to include DB_BACKEND argument
Convert images from BGR to RGB before plotting with matplotlib
Update paths

Conflicts:
	examples/mnist/readme.md
Explain how to fix homebrew to allow updates after editing formulae
Point to local file, not github file

This makes the readme file more consistent
Correct reference to lenet_train_test.prototxt

Not lenet.prototxt
Inline latest lenet_solver.prototxt
Add oto_cifar network definition
Train on GPU for EC2
Reduce batch size 100 -> 50 so net fits in memory
Un-version mean binaryproto file (in case it changes); rename
[Not Tested] First draft of files for oto_imagenet solver
[Bugfix] Move error checking closer to file read

Previously, if (height > 0 && width > 0) was true, the cv::resize()
function would be called before cv_img_origin was confirmed valid,
which caused an opencv assert error like this:

terminate called after throwing an instance of 'cv::Exception'
  what():  /tmp/A3p0_4200_32550/batserve/A3p0/glnxa64/OpenCV/modules/imgproc/src/imgwarp.cpp:1725: error: (-215)
  ssize.area() > 0 in function resize
[Bugfix] add oto_ prefix to net name and snapshot
Allow output_dir as optional input parameter
Improve variable names and write as CSV, not space-delimited

I couldn't figure out how to read the space-delimited file using
Matlab's tableread function. The CSV is less aesthetic on its own but it
can be easily read by Matlab, excel or whatever.
Trash oto_cifar10 network
Merge pull request #4 from CellScope/oto-imagenet

Oto imagenet