ignore caffe generated files and stop ignoring examples
ignore caffe generated files and stop ignoring examples

- ignore models and snapshots, means, and input databases
- excluding exceptions to commits is easier than including exhaustively

CZCV/s-dilation-caffe,gnina/gnina,wangg12/caffe,CZCV/s-dilation-caffe,gogartom/caffe-textmaps,gnina/gnina,tackgeun/caffe,gogartom/caffe-textmaps,tackgeun/caffe,longjon/caffe,longjon/caffe,wangg12/caffe,CZCV/s-dilation-caffe,gnina/gnina,CZCV/s-dilation-caffe,wangg12/caffe,gnina/gnina,gnina/gnina,wangg12/caffe,gogartom/caffe-textmaps,tackgeun/caffe,longjon/caffe,gogartom/caffe-textmaps,gnina/gnina,longjon/caffe,tackgeun/caffe