Adding some extra aliases

I keep typing :W or :Q and it not working in vim. I mapped them to their respected lowercase value so that it works instead of making me type it in twice.

I have also mapped the vim navigation commands to switch between panes in tmux or wemux. Simply type:

ctrl + a then h = move left
ctrl + a then j = move down
ctrl + a then k = move up
ctrl + a then l = move right