Chef: vim: install it by default

No idea why this was missing!?
Chef: sublime_text: begin fleshing out a base configuration

...begin automating installation of various Package Control-tracked
packages I tend to install immediately install on fresh systems.

Need to revisit this to prevent ugliness the first time ST is run, as
the missing theme causes warnings. For now, just leave it a couple of
minutes, then close and restart. Package Control seems to wait a few
seconds before checking installed_packages for any missing ones.

Running ```make sublime_text``` from the top of the ```chef``` directory
will copy the relevant ST3 and PC preferences files into the
```lukecarrier``` cookbook.