Remove vim as I don't use this any more.
Add node and npm version to bash_profile.
Refactor ruby settings into rubyrc.

This really just handles using rbenv to determine the version of Ruby
that is to be used. Furthermore bashrc should now be sourced before all
of these additional files.

This gives us chance to override settings if necessary using the localrc.
Modify version information for npm and node.

This would look a lot better on a single line.