Setup
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 $HOME/etc/ contains files like 'bashrc' and directories like 'vim'
 $HOME/.* are symlinks to files in $HOME/etc
The idea is that $HOME/etc is tracked by a revision control system like
git.
Running
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Getting help:
 # etc/dot-files help
 dot-files - manages symlink files from ~/etc/* to ~/.*
 Syntax: dot-files [ <command> ] [ <options> ]
 Commands:
 list - list all etc files
 status - status of available files
 install [-v] [-f] - installs symlinks
Checking on the status:
 # etc/dot-files status
 zshrc OK
 bashrc .
 vimrc file
'OK' means that there is a $HOME/.zshrc symlink to etc/zshrc. 'file'
means that there is a $HOME/.zshrc file, but we could convert it into a
symlink. A dot means that the $HOME/.bashrc is not populated.
You can install new symlinks:
 # etc/dot-files install
 installing .zshrc ... skipped, OK
 installing .bashrc
 installing .vimrc
 ln: creating symbolic link `/home/bart/.vimrc': File exists
The above skipped .zshrc, installed a symlink for .bashrc, stopped at
vimrc because there was a conflict.