update readme
remove outdated hub options
fish: mutt function runs in-shell

This keeps access to the system clipboard intact
move tmux colors out to iterm pencil theme
vim: revert sidescrolloff

Turns out a large value here was a horrible idea.
vim: leader mappings retweak

c - regen ctags
d - toggle background dark/light
f - fix mapping for file from b
m - open in marked.app   ... this actually works now.
u - open url
v - reload vim config

also new function to support d
vim: turn off syntastic auto loc list
fish: default greeting is fine
vim: massive update
Update readme with better writing