Added vimrc.local management
Update .vimrc
Created a blank vimrc.local
Changed order of local virmcs inclusion

As pointed out by mackwic, the home wide `vimrc.local` should be overriding the one in `~/.vim`.
This is now fixed.
Merge pull request #1 from Jerskouille/patch-1

Added vimrc.local management, thanks @Jerskouille