Updating date range.

The files that make up this collection are actually much older than 2011, with the first vestiges dating from around 2006 when I started using vim and customizing bash. You can see from the initial commit in this repo (658f86d743b9fa26ed344f7afc7ceb1ef6757cd1) that its already a full configuration in 2011. 

Previously I think I just ported it from machine to machine by hand, or maybe it was in a Mercurial repo.