add newfile zshenv
add push-line keybind
change vimrc command (about edit & reload)

refers to vimrc in this repository(not ~/.vimrc).
~/.vimrc has the line "source dotfiles/vim.d/vimrc" only.
Merge branch 'master' of https://github.com/mk9926/dotfiles

Conflicts:
	zsh.d/zshenv