fix detection notebook link
link canonical bvlc site
fix test_all path in docs
EltwiseProductLayer -> EltwiseLayer for generality

Reproduce elementwise product layer in more generality.
Add elementwise operation parameter.
Prepare for elementwise sum operation choice.
add caffe_gpu_add() and caffe_gpu_sub()
Elementwise layer learns summation
add EltwiseLayer docstring
point out @niuzhiheng's work on the Windows port
reduce example image size
Merge pull request #434 from shelhamer/little-cat

Reduce example image size
release v1 model defs + weights

- Caffe reference ImageNet model
- AlexNet

Note that one can upgrade the weights locally by
`upgrade_net_proto_binary.bin` to avoid re-downloading.
fix draw_net python script

include caffe.draw for drawing functions.
Merge pull request #435 from shelhamer/v1-models

Release v1 model defs + weights
fix layer name in logging
make sum the default eltwise operation
link to demo
link presentation on dropbox (was self-hosted during a dropbox issue)
weight elementwise sum with per-blob coefficients
commment, lint
Merge pull request #433 from shelhamer/eltwise

Elementwise layer takes sum or product; caffe_gpu_{add,sub}