Merge pull request #1 from xianyi/master

[master] Added the missing include file.
Update README.md

Type fix; plus history and paper link
reduce the lengh of README
[xianyi-pure_cpu] Merge branch 'pure_cpu' of https://github.com/xianyi/minerva into xianyi-pure_cpu
[xianyi-pure_cpu] Merge
[xianyi-pure_cpu] YCM file
[master] Merge branch 'xianyi-pure_cpu'
Added emacs temporary files to gitingore.