My private vim configuration including .vim/ directory and .vimrc file
###Hint: You should create a symbol link to ./.vimrc,
otherwise Vim can't read ~/.vim/ directory.eg: ln -s ~/.vim/.vimrc ~/.vimrc, or you can use the '$ sh create_vim_link.sh' to replace it.
###Useful vim commands: *. scriptnames show the vim loading configure files
*. echo $VIM show vim path