This contains fixes suggested by Henrik as feedback from the initial PR,
including updating and correcting the Eshell module README, and few
tweaks to the module configuration, and properly pinning
eshell-did-you-mean.
Added a README file detailing the Eshell module, a few minor tweaks to
the config, some keybindings, and the eshell-did-you-mean package.
More to come!
