[docs] default setting for layout
Merge pull request #1034 from sergeyk/dev

[docs] default setting for layout
[models] adding zoo readme; caffenet, alexnet, and rcnn models in zoo format
snapshot model with caffemodel extension
proofread model zoo
deleting unneeded script files
removing unneeded scripts from imagenet example
Renaming CaffeNet model prototxts and unignoring models/*
updating feature extraction example
removed mention of getting_pretrained_models page and old paths
minor fixes to docs
flickr style fine-tuning model (separated from example read me)
script to upload/update model info as gist