add doc for ijulia-imagenet
add gadfly to imagenet demo.
random mirror support for crop layer
random mirror for CropLayer CUDA implementation
update doc for CropLayer
update travis to use git version of HDF5
make layer doc sorted in alphabetic order
fix CI test error on Julia v0.4
more documents
update NEWS file.
allow CUDA and NATIVE_EXT be disabled by setting env variable to "false"
Add coverage statistics to CI script
Add coverage badge
add scheduing for momentum, this is necessary to reproduce some state of the art results
add scheduing for momentum, this is necessary to reproduce some state of the art results
Rebase momentum_policy on master
Merge pull request #5 from stokasto/momentum_policy

Momentum policy
attempt to abstract image-classifier to allow multiple image backend.
Revert "attempt to abstract image-classifier to allow multiple image backend."

This reverts commit c8c959937c989d91853206a35a85ae5d8484af4a.
disable appveyor CI as it randomly fails too often due to network etc.