add makefile for cpu-only machine
Merge pull request #2 from antinucleon/dev

use dev=0 instead of dev=-1
Update cxxnet_main.cpp

fix device id error in some machines, due to sscanf behavior difference
update cpu mk
forget sse flag
Update README.md
make config reader more flexible, allow using istream such as directly parse from string
Merge remote-tracking branch 'origin/master' into dev

merge cxxnet_config.h