change the way of version detect for undo persistence
fix #26, patched by @fangwentong
Merge branch 'master' of github.com:wklken/k-vim
Merge pull request #41 from ruanyl/master

change the way of version detect for undo persistence
remove useless config for powerline/taglist
Merge branch 'master' of github.com:wklken/k-vim
Merge pull request #2 from wklken/master

update