working on a z clone, xd
err, that was a weird reorg
adding a TODO about OSX breaking shit because it's not actually unix
separating with a colon, actually sourcing
adding a cd() function
deleting empty keys
working on OSX.. though it does seem to need to be sourced twice (?)
fixing some spacing bugs
fixing the initial nil case for xd()
Merge pull request #2 from chorankates/xd

xd