Add batch normalization layer

[201power]

It seems the NVcaffe does not have batch normalization layer yet, which is already exist in caffe master branch. Can we add this update to NVcaffe?
A general question: can digits use Caffe master branch directly?

[lukeyeager]

We have batch normalization in the caffe-0.14 branch. It should be promoted to the master branch soon (see #106 (comment)).

You could use a deb package to install a prebuilt version of v0.14.0-rc.3, which includes batch normalization. Instructions here: https://github.com/NVIDIA/DIGITS/blob/digits-3.0/docs/UbuntuInstall.md

And no, you can't use DIGITS with BVLC/caffe yet. DIGITS needs to know how to interface with Caffe, and without a version number there's no way to tell which interface to use. BVLC#3311 helps, but it remains to be seen what sort of versioning strategy BVLC is going to employ.