Get cuda-convnet repository path from $CUDA_CONVNET
Added instructions for specifying cuda-convnet repository path
Read fieldnames from metadata; allow empty metadata and multiclass labels
Compute area under curve only when possible
Use lists to save memory; fixed image orientation
Use CIFARDataProvider defaults
Use CIFAR defaults
Save label too
Get label scalar
Save predictions only
Fixed broken import
Merge branch 'patch-1' of github.com:invisibleroads/noccn into patch-1