new NrrwRgn integration
doesn't assume user has 'set autochdir' set
Merge pull request #496 from chrisbra/new_feature_nrrwrgn

new NrrwRgn integration
Merge pull request #497 from johnathanz/master

doesn't assume user has 'set autochdir' set
Merge branch 'master' of https://github.com/bling/vim-airline
remove normal_modified color in xoria256
always show buffers