To get started post-clone, you'll need to git submodule init followed by a
git submodule update to pull in Vundle (required for bundle management).
Once that's done, just open up vim and call :BundleInstall which will
install all the configured bundles.
The included settings for mutt don't actually reference any specific accounts,
so you'll need to define, e.g.: folder, spoolfile, smtp_url and any
other mailbox settings in a new configuration file under ~/.mutt and source
it from your .muttrc.
The .Xmodmap file included is for use with a UK Apple USB keyboard. Mostly,
it just puts things back where you would expect them to be (apart from Ins
which I can't fix).
First, clone the upstream repo into $HOME:
git clone https://github.com/robbyrussell/oh-my-zsh.git ~/.oh-my-zsh
then just symlink everything from .oh-my-zsh/custom into
~/.oh-my-zsh/custom:
cd /path/to/dotfiles/checkout ln -s $(pwd)/.oh-my-zsh/custom/* ~/.oh-my-zsh/custom