bootstrap vim-plug

bootstrap-vim-plug.vim

if has('win32')
    if empty(glob(expand('$HOMEDRIVE/$HOMEPATH/vimfiles/autoload/plug.vim')))
        exe 'silent !curl -fLo '.expand('$HOMEDRIVE/$HOMEPATH/vimfiles/autoload/plug.vim').' --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
        autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
    endif
else
    if empty(glob('~/.vim/autoload/plug.vim'))
        silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
                    \ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
        autocmd VimEnter * PlugInstall --sync | source $MYVIMRC
    endif
endif