[osx] Add setting of sane OSX defaults
[tmux] Use vi bindings in tmux copy mode

Also install reattach-to-user-namespace brew formula which allows copy
and paste into OSX clipboard
[brew] Invoke `brew clean` when done installing homebrews
[vim] Use most recent version of vim
[vim] Update command to install vim vundles
Add custom aliases
[tmux] Let the tmux windows start at index 1
[tmux] specify `renumber-windows on`